usb flash drive with lcd display free sample

USB flash drives are one of the most common flash drives in the market. While the LCD display of the USB flash flash is one of the most common devices that are used as flash drives. While USB flash drives are more popular in the mobile chrome market, they may be in the form of USB flash drives. With the flexibility of their mobile devices, USB flash drives are becoming the most popular as chrome and mobile flash drives. This display has also been trending in the form of USB flash drives, which are used as a portable marketing tool, allowing access to a variety of flash drives.
While the USB flash drives are equipped with a built-in lcd display that can be used as a marketing tool for various purposes. USB flash drives include white USB flash drives, a flash drive with a display that can be used as a marketing tool, as well as an option for two-digit users. For flash drives that include white USB flash drives, a flash drive with the built-in LCD display (U)) for the storage of a flash drive.
With the storage of these USB flash drives, there is a option that can be used as a marketing tool, in the form of USB flash drives. USB flash drives with 1GB of capacity may be sufficient as a marketing tool, in the form of a flash drive. With the option of using flash, there are also USB flash drives that can be used as a marketing tool, in the form of a portable flash drive. With all the features available in the form of a flash drive, USB flash drives with 1GB of capacity may be sufficient to add the features as well as an option to allow the users to use two flash drives with a built-in storage chip and the external storage space.
Personalized flash drives are available in bulk to support theat of business products. The logos of these USB flash drives are available in bulk to support theat of new business models. USB flash drives with logos are built with the built-in USB flash drives that are suitable to be used as a marketing tool, as a portable flash drives, in the form of a flash drive. Custom flash drives with logos are built as one of the most popular flash drives in bulk, which are are used as a portable marketing device, as well as a portable flash drive.

Personalized flash drives include various plastic that can be used as a portable marketing device, such as a USB flash drive. Custom USB flash drives are made in various formats, such as USB flash drives, are made with plastic, metal, and a built-in flash drives. Personalized USB flash drives can be made with various features, such as USB flash drives with logos, portable flash drives, and USB flash drives are made with different colors and logs to suit the needs of the users. A custom-printed USB flash drives can be made in several formats, including USB 2.0 and USB 3.0 flash drives. Custom logo USB flash drives can be made with a variety of materials, including USB 2.0 and a 3.0 USB flash drive.
In the form of USB flash drives, these flash drives can be made of various materials, such as wood, plastic, and metal. USB flash drives that are sold in various formations can be made with different materials, such as USB flash drives, metal flash drives, and metal flash drives. Other flash drives available include aluminum, plastic, and metal USB flash drives.
With the advancement in technology, USB flash drives can prove to be a useful addition to the marketing and the design of the USB thumb drives. USB flash drives can come with various features and colors, such as a wooden flash drive, and metal USB flash drives. The appearance of the USB flash drives can also be customized to suit the needs of the users as well.
With the various USB-powered USB drives available, the USB flash drives can be customized to add the features as a portable marketing tool, in the form of a flash drive. USB flash drives can also be customized to add the features of a portable USB flash drive.

I have a NetBook or an older PC with relatively low memory or little disk space capacity. How can I use USB stick or an SD-card to improve the working speed?Resolution
Like its predecessor Windows Vista, Windows 7 provides the Windows ReadyBoost function to provide Netbooks or older PC systems with more memory. You can use non-volatile flash memory such as current USB memory stick or SD memory cards to improve the performance of your system. This additional memory is provided as cache memory, to speed up, for example, the loading or editing of large files.
Important: You need a USB flash drive or a memory card with a free storage capacity of at least 500 MB and a high data transfer rate. Since you can permanently "park" SD cards in the designated PC slot, the small disks for ReadyBoost are particularly well suited. Cards with a capacity of one or two GB are indeed quite enough for ReadyBoost.
1. Plug the USB stick or SD card into a free slot. The storage medium is detected immediately. In the dialog box Automatic playback click on the option Speed up my system.
2. If the dialog box Automatic playback does not automatically appear, open Windows Explorer by pressing [Windows button] + [E]. Then with the right mouse button click on the new drive in the left directory tree, and select the command Open AutoPlay.
1. Open the File Explorer by pressing [Windows button] + [E]. Then, you click on the ReadyBoost drive in the left side tree, so that in the right pane the file entry ReadyBoost.sfcache displays.

Added "Copy Clicked Cell" option to the right-click context menu, which copies to the clipboard the text of cell that you right-clicked with the mouse.
These properties are stored in the Registry under Properties\{83da6326-97a6-4088-9453-a1923f573b29} subkey of every USB device, and only SYSTEM user can read them.
Fixed bug: The /regfile , /remote and /remotefile command-line options stopped working properly because the USBDeview loaded the settings from the .cfg file...
Added option to automatically start the Remote Registry service on the remote machine for reading the USB devices information (In "Advnaced Options" window).
Added /RunAsAdmin command-line option. You can use it with other command-line options of actions that require elevation ( /remove, /disable , /enable , /disable_enable ),
Update for Windows 7/8/Vista/2008: USBDeview now extracts the real device name directly from hardware when the device is connected and the "Retrieve USB Power/Version Information" option is
Added "Mark Odd/Even Rows" option, under the View menu. When it"s turned on, the odd and even rows are displayed in different color, to make it easier to read a single line.
You can now send the USB devices information to stdout by specifying an empty filename ("") in the command-line. (For example: usbdeview.exe /stext "" >> c:\temp\usb.txt)
Added command-line options that controls what devices to save or display (/DisplayDisconnected, /DisplayHubs, /DisplayNoPortSerial, /DisplayNoDriver).
Improved drive letter detection: USBDeview now also detect the drive letter of hard-disk drives connected to USB. (This improvement only works only for local computer)
The test is made by writing a large file (named $speed_test_nirsoft$.dat) into your USB flash drive, and then reading it back for testing the read speed.
Also, be aware that this test is made with sequential read and write operations. When using multiple small files, the read/write performances are usually much lower than sequential read/write.
In order to make a speed test to your flash drive, simply select the desired item in the main window, and then choose the "Speed Test" option from the File menu, or press Ctrl+T.
Stop/disconnect a USB device by specifying the VendorID/ProductID. You can specify only the VendorID if you want to disconnect all devices with that VendorID.
For example, the following batch file will display 1 if the device with serial number 7538957348957398 is connected or 0 if the device is not connected:

USB flash drives are a portable, cost-effective solution to back-up your data or transfer files. They come in a wide array of designs, storage sizes, and data transfer speeds. With storage capacities that exceed 200GBs, these pocket size drives allow you the flexibility to transfer and exchange data from and to desktops, laptops, printers via any USB port.
Unlike many external portable hard drives, USB drives are incredibly compact and lightweight. With them, you don"t have to carry your laptop or tablet around when you need to access important files. These tiny pen-shaped devices work without the need to install any driver, so you"ll be able to transfer files between two computers faster than ever before. Unlike cloud-based storage services, USB flash drives can work offline, providing more flexibility and data security. They"re also available with multimedia card readers for expanded compatibility. Flash drives are typically inexpensive, starting from around $5.
Many USB drives have encryption features to protect your data just like hard drives. Some models protect all the files with a password, while others have two separate areas; one for password-protected files and one for freely-accessible files. Most password-protected flash drives can lock down or reformat themselves after a certain number of failed login attempts.
Flash drive memory sticks come in standard storage sizes. Typically the larger the capacity, the higher the price. However, even very large USB drives are increasingly cheap. The most common storage sizes are 2GB, 4GB, 8GB, 16GB and 32GB. There are also larger drives with capacities up to 1TB or 2TB. If you only need to store .docx or .pdf documents, a 2GB pen drive is more than enough. If you want to save music and videos then an 8GB or 16GB pen drive is a better choice for you.
USB 3.2 pen drives are the fastest on the market, and they can reach a speed of 2500MBps. There are USB 3.1 drives that are capable of writing and reading data at a speed of up to 1250MBps. USB 3.0 drives work at a maximum speed of 625MBps, while the ones with USB 2.0 work at up to 60MBps. These USB standards are backward compatible, so you can use a 3.2 pen drive with a 3.1 port and so on. Inevitably, you base the actual write and read speed on the port"s USB standard. For example, if you use a USB 3.0 drive with a 2.0 port, the maximum speed allowed will be 60MBps.
USB OTG flash drives can work with your smartphone without the need for any additional piece of hardware. Most models have both a micro-USB and standard USB port, so they can transfer photos and videos from your phone to your computer. Many USB OTG drives can also work as portable chargers for your mobile device.

U disk vs USB: which one should you pick? To make a wise choice, you should learn them respectively and the difference between U disk and USB flash drive. MiniTool will show you all the content that you’d like to know and some other information.
Now, more and more portable data storage devices come into market and become available so that various kinds of demands can be satisfied. If you want to select some devices, TF card, USB flash drive, and memory stick are great choices.
Tip: If you are going to select a bigger hard drive, Seagate 500GB hard drive st500dm002-1bd142, Seagate 1TB hard drive st1000dm003-1ch162 and 4TB hard drive are wonderful candidates for you.
For mobile data storage devices, U disk and USB flash attract lots of people’s attention. Though they are small, they are capable of holding a great deal of data. However, plenty of users are confused by the two items as both of them have similar shapes.
How to tell the difference between U disk and USB flash drive and make a choice? You need to know what U disk and USB flash drive are firstly. To get the detailed information, please keep reading the post.
The U disk(also calledUSB hard disc drive) is a hard drive in USB form, which has magnetic hard drive platters spinning inside the enclosure. Each U disk has a bridge chip that can be used to manage the way that the drive is installed to the operating system.
This chip converts the drive form from IDE protocols to USB. The cost of U disk production is cheap, but the sale price is the same as a standard flash memory USB drive. It is portable and small, but it is still slightly bigger than a USB flash drive. However, this doesn’t have much impact when making the choice.
USB flash drive is a data storage device that includes flash memory with integrated USB interface. Therefore, it enjoys many advantages such as fast speed, anti-magnetic, anti-shock, moisture-proof.
Since the USB flash drive is removable and rewritable, you can store your data continuously on it. If the drive is full, you are able to delete the previous data and then store the new data.
Both the U disk and USB flash drive are data storage devices, but they work differently due to their own structure. The U disk uses rotating disks (platters) that are coated with magnetic material to store data.
Differently, USB flash drive stores data by using flash memory. Thanks to this factor, USB drive has better reliability against pressure and temperature.
If your USB flash drive can be installed on the computer as a UDISK, it indicates that it’s a bad USB drive with firmware that cannot match the memory type and controller combination. If the firmware in the controller is incorrect, the USB stick will become unstable.
If you would like to know the exact speed of your U disk or USB flash drive, you can use a speed tester. MiniTool Partition Wizard is a professional tool that enables you to test your device’s speed with ease.
In addition to that, it also allows you to manage your disks or partitions. For instance, it helps you detect and fix file system error, analyze disk usage, copy disk, etc. In practice, it is useful for cleaning up computer, protecting the hard drive data from bit rot and doing other PC protecting jobs.
Step 3:In the next window, select the drive letter of your device. You can set other parameters based on your demands. After that, click the Start button to begin the testing process.
To test the speed of your U disk, connect it to computer and then repeat the above steps again. Then, you will obtain the respective speed of u-disk and USB drive. U disk vs USB flash drive, which one is better? Read here, you may have the answer.
As you can see, USB flash drive boasts more advantages (fast speed, anti-magnetic, anti-shock, moisture-proof, pressure) than U disk. Their prices are nearly identical. So, it can be concluded that USB flash drive is better.
Before answering the question – how to use UDISK, you should know where is can be applied to. The U disk can be used on any computer that has a USB port. Besides, the U disk is also compatible with Android smartphone/tablet produced after 2012 that has a standard Micro USB port.
Once the reading process ends, new programs on the U disk will display. Then, you can use the disk as you like. Sometimes, you encounter the U disk doesn’t work issue like many other users. For this issue, there are several possible reasons. You can check them one by one to fix the issue.
You utilize u-disk in an inappropriate way. You should use the software to produce the program, and then export it to U disk. Finally, insert the U disk to sign. Pay attention to that the UDISK should be inserted when the sign is displaying programs.
Here, MiniTool Partition Wizard is strongly recommended to you. It allows you to recover deleted files from U disk, lost data from hard drive and other kinds of missing data. You can download one MiniTool Partition Wizard Edition based on your demand. Please refer to edition comparison to get the detailed information.
Step 6:The program will save the recovered data automatically. You just need to wait patiently until the process finishes. If you are prompted with any questions, just follow them.
What is U disk? U disk or USB flash drive? You may have a clear answer now. After reading the post, you will not hesitate to make a choice between the UDISK and USB flash drive. In addition, you have the guide to use your U disk.
With this post, you don’t have to worry about U disk data loss. Because you can recover it easily with MiniTool Partition Wizard. If you have any question when using MiniTool software, write an email via [email protected]. If you have something to share with us, please leave the words
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Nearly any image, product or idea can be rendered into custom rubber USB drives. Create a custom shape flash drive made to match your premier product, your logo, or your company identity.
We have made custom shaped thumb drives for some of the most well-known companies in the U.S. They keep coming back for our customer service and design capabilities.
Logotech"s custom shaped flash drives have a low minimum order size, starting at just 100 units. We offer storage capacity up to 256Gb in either USB 2.0 or USB 3.0 flash memory types.
They are the perfect marketing tool for your conference or trade show. A custom shaped USB as your memory stick promotion wows your clients. It will have them come back to learn more. Anything you can imagine is possible.
Browse our gallery of previous designs for ideas and inspiration. Pick from these ideas, or our designers will work with you to create one of your very own from scratch. Logotech offers the coolest, custom shaped USB flash drives to match your product and organization needs perfectly.
Check out more of our designs on theLogotech blog. There you can see many of the hundreds of specialty designed and custom shaped thumb drives we have made.

A USB flash drive (also called a thumb drive in the US, or a memory stick in the UK)data storage device that includes flash memory with an integrated USB interface. It is typically removable, rewritable and much smaller than an optical disc. Most weigh less than 30 g (1 oz). Since first appearing on the market in late 2000, as with virtually all other computer memory devices, storage capacities have risen while prices have dropped. As of March 2016gigabytes (GBterabyte (TBshelf storage time
Common uses of USB flash drives are for storage, supplementary back-ups, and transferring of computer files. Compared with floppy disks or CDs, they are smaller, faster, have significantly more capacity, and are more durable due to a lack of moving parts. Additionally, they are less vulnerable to electromagnetic interference than floppy disks, and are unharmed by surface scratches (unlike CDs). However, as with any flash storage, data loss from bit leaking due to prolonged lack of electrical power and the possibility of spontaneous controller failure due to poor manufacturing could make it unsuitable for long-term archival of data. The ability to retain data is affected by the controller"s firmware, internal data redundancy, and error correction algorithms.
Until about 2005, most desktop and laptop computers were supplied with floppy disk drives in addition to USB ports, but floppy disk drives became obsolete after widespread adoption of USB ports and the larger USB drive capacity compared to the "1.44 megabyte" (1440 kilobyte) 3.5-inch floppy disk.
USB flash drives use the USB mass storage device class standard, supported natively by modern operating systems such as Windows, Linux, Unix-like systems, as well as many BIOS boot ROMs. USB drives with USB 2.0 support can store more data and transfer faster than much larger optical disc drives like CD-RW or DVD-RW drives and can be read by many other systems such as the Xbox One, PlayStation 4, DVD players, automobile entertainment systems, and in a number of handheld devices such as smartphones and tablet computers, though the electronically similar SD card is better suited for those devices, due to their standardized form factor, which allows it to be housed inside a device without protruding.
A flash drive consists of a small printed circuit board carrying the circuit elements and a USB connector, insulated electrically and protected inside a plastic, metal, or rubberized case, which can be carried in a pocket or on a key chain, for example. Some are equipped with an I/O indication LED that lights up or blinks upon access. The USB connector may be protected by a removable cap or by retracting into the body of the drive, although it is not likely to be damaged if unprotected. Most flash drives use a standard type-A USB connection allowing connection with a port on a personal computer, but drives for other interfaces also exist (e.g. micro-USB and USB-C ports). USB flash drives draw power from the computer via the USB connection. Some devices combine the functionality of a portable media player with USB flash storage; they require a battery only when used to play music on the go.
The basis for USB flash drives is flash memory, a type of floating-gate semiconductor memory invented by Fujio Masuoka in the early 1980s. Flash memory uses floating-gate MOSFET transistors as memory cells.
Multiple individuals have staked a claim to being the inventor of the USB flash drive. On April 5, 1999, Amir Ban, Dov Moran, and Oron Ogdan of M-Systems, an Israeli company, filed a patent application entitled "Architecture for a Universal Serial Bus-Based PC Flash Disk".Shimon Shmueli, an engineer at IBM, submitted an invention disclosure asserting that he had invented the USB flash drive.Trek 2000 International is the first company known to have sold a USB flash drive, and has also maintained that it is the original inventor of the device.Pua Khein-Seng, a Malaysian engineer, has also been recognized by some as a possible inventor of the device.
Given these competing claims to inventorship, patent disputes involving the USB flash drive have arisen over the years. Both Trek 2000 International and Netac Technology have accused others of infringing their patents on the USB flash drive.
Flash drives are often measured by the rate at which they transfer data. Transfer rates may be given in megabytes per second (MB/s), megabits per second (Mbit/s), or in optical drive multipliers such as "180X" (180 times 150 KiB/s).
By 2002, USB flash drives had USB 2.0 connectivity, which has 480 Mbit/s as the transfer rate upper bound; after accounting for the protocol overhead that translates to a 35 MB/s effective throughput.
By 2010, the maximum available storage capacity for the devices had reached upwards of 128 GB.USB 3.0 was slow to appear in laptops. Through 2010, the majority of laptop models still contained only USB 2.0.
In January 2013, tech company Kingston, released a flash drive with 1 TB of storage.USB 3.1 type-C flash drives, with read/write speeds of around 530 MB/s, were announced in March 2015.
On a USB flash drive, one end of the device is fitted with a single Standard-A USB plug; some flash drives additionally offer a micro USB or USB-C plug, facilitating data transfers between different devices.
On a USB flash drive, one end of the device is fitted with a single USB plug; some flash drives additionally offer a micro USB plug, facilitating data transfers between different devices.
Inside the casing is a small printed circuit board, which has some power circuitry and a small number of surface-mounted integrated circuits (ICs).flash memory. Drives typically use the USB mass storage device class to communicate with the host.
Flash memory combines a number of older technologies, with lower cost, lower power consumption and small size made possible by advances in semiconductor device fabrication technology. The memory storage was based on earlier EPROM and EEPROM technologies. These had limited capacity, were slow for both reading and writing, required complex high-voltage drive circuitry, and could be re-written only after erasing the entire contents of the chip.
Hardware designers later developed EEPROMs with the erasure region broken up into smaller "fields" that could be erased individually without affecting the others. Altering the contents of a particular memory location involved copying the entire field into an off-chip buffer memory, erasing the field, modifying the data as required in the buffer, and re-writing it into the same field. This required considerable computer support, and PC-based EEPROM flash memory systems often carried their own dedicated microprocessor system. Flash drives are more or less a miniaturized version of this.
The development of high-speed serial data interfaces such as USB made semiconductor memory systems with serially accessed storage viable, and the simultaneous development of small, high-speed, low-power microprocessor systems allowed this to be incorporated into extremely compact systems. Serial access requires far fewer electrical connections for the memory chips than does parallel access, which has simplified the manufacture of multi-gigabyte drives.
Many low-cost MP3 players simply add extra software and a battery to a standard flash memory control microprocessor so it can also serve as a music playback decoder. Most of these players can also be used as a conventional flash drive, for storing files of any type.
USB plug – provides a physical interface to the host computer. Some USB flash drives use USB plug that does not protect the contacts, with the possibility of plugging it into the USB port in the wrong orientation, if the connector type is not symmetrical.
USB connector cover or cap – reduces the risk of damage, prevents the entry of dirt or other contaminants, and improves overall device appearance. Some flash drives use retractable USB connectors instead. Others have a swivel arrangement so that the connector can be protected without removing anything.
Transport aid – the cap or the body often contains a hole suitable for connection to a key chain or lanyard. Connecting the cap, rather than the body, can allow the drive itself to be lost.
Most USB flash drives weigh less than 30 g (1 oz).USB port connectors on a computer housing are often closely spaced, plugging a flash drive into a USB port may block an adjacent port. Such devices may carry the USB logo only if sold with a separate extension cable. Such cables are USB-compatible but do not conform to the USB standard.
USB flash drives have been integrated into other commonly carried items, such as watches, pens, laser pointers, and even the Swiss Army Knife; others have been fitted with novelty cases such as toy cars or Lego bricks. USB flash drives with images of dragons, cats or aliens are very popular in Asia.case modding.
Most flash drives ship preformatted with the FAT32, or exFAT file systems. The ubiquity of the FAT32 file system allows the drive to be accessed on virtually any host device with USB support. Also, standard FAT maintenance utilities (e.g., ScanDisk) can be used to repair or retrieve corrupted data. However, because a flash drive appears as a USB-connected hard drive to the host system, the drive can be reformatted to any file system supported by the host operating system.
Flash drives can be defragmented. There is a widespread opinion that defragmenting brings little advantage (as there is no mechanical head that moves from fragment to fragment), and that defragmenting shortens the life of the drive by making many unnecessary writes.
Some file systems are designed to distribute usage over an entire memory device without concentrating usage on any part (e.g., for a directory) to prolong the life of simple flash memory devices. Some USB flash drives have this "wear leveling" feature built into the software controller to prolong device life, while others do not, so it is not necessarily helpful to install one of these file systems.
Sectors are 512 bytes long, for compatibility with hard disk drives, and the first sector can contain a master boot record and a partition table. Therefore, USB flash units can be partitioned just like hard disk drives.
The memory in flash drives was commonly engineered with multi-level cell (MLC) based memory that is good for around 3,000-5,000 program-erase cycles.single-level cell (SLC) based memory that is good for around 30,000 writes.
Estimation of flash memory endurance is a challenging subject that depends on the SLC/MLC/TLC memory type, size of the flash memory chips, and actual usage pattern. As a result, a USB flash drive can last from a few days to several hundred years.
Counterfeit USB flash drives are sometimes sold with claims of having higher capacities than they actually have. These are typically low capacity USB drives whose flash memory controller firmware is modified so that they emulate larger capacity drives (for example, a 2 GB drive being marketed as a 64 GB drive). When plugged into a computer, they report themselves as being the larger capacity they were sold as, but when data is written to them, either the write fails, the drive freezes up, or it overwrites existing data. Software tools exist to check and detect fake USB drives,
Transfer speeds are technically determined by the slowest of three factors: the USB version used, the speed in which the USB controller device can read and write data onto the flash memory, and the speed of the hardware bus, especially in the case of add-on USB ports.
USB flash drives usually specify their read and write speeds in megabytes per second (MB/s); read speed is usually faster. These speeds are for optimal conditions; real-world speeds are usually slower. In particular, circumstances that often lead to speeds much lower than advertised are transfer (particularly writing) of many small files rather than a few very large ones, and mixed reading and writing to the same device.
In a typical well-conducted review of a number of high-performance USB 3.0 drives, a drive that could read large files at 68 MB/s and write at 46 MB/s, could only manage 14 MB/s and 0.3 MB/s with many small files. When combining streaming reads and writes the speed of another drive, that could read at 92 MB/s and write at 70 MB/s, was 8 MB/s. These differences differ radically from one drive to another; some drives could write small files at over 10% of the speed for large ones. The examples given are chosen to illustrate extremes.
The most common use of flash drives is to transport and store personal files, such as documents, pictures and videos. Individuals also store medical information on flash drives for emergencies and disaster preparation.
With wide deployment(s) of flash drives being used in various environments (secured or otherwise), the issue of data and information security remains important. The use of biometrics and encryption is becoming the norm with the need for increased security for data; on-the-fly encryption systems are particularly useful in this regard, as they can transparently encrypt large amounts of data. In some cases a secure USB drive may use a hardware-based encryption mechanism that uses a hardware module instead of software for strongly encrypting data. IEEE 1667 is an attempt to create a generic authentication platform for USB drives. It is supported in Windows 7 and Windows Vista (Service Pack 2 with a hotfix).
A recent development for the use of a USB Flash Drive as an application carrier is to carry the Computer Online Forensic Evidence Extractor (COFEE) application developed by Microsoft. COFEE is a set of applications designed to search for and extract digital evidence on computers confiscated from suspects.CD-ROM or DVD-ROM, but cannot store data on the media they are run from (although they can write to other attached devices, such as external drives or memory sticks).
Motherboard firmware (including BIOS and UEFI) can be updated using USB flash drives. Usually, new firmware image is downloaded and placed onto a FAT16- or FAT32-formatted USB flash drive connected to a system which is to be updated, and path to the new firmware image is selected within the update component of system"s firmware.
Also, HP has introduced a USB floppy drive key, which is an ordinary USB flash drive with additional possibility for performing floppy drive emulation, allowing its usage for updating system firmware where direct usage of USB flash drives is not supported. Desired mode of operation (either regular USB mass storage device or of floppy drive emulation) is made selectable by a sliding switch on the device"s housing.
Most current PC firmware permits booting from a USB drive, allowing the launch of an operating system from a bootable flash drive. Such a configuration is known as a Live USB.
Original flash memory designs had very limited estimated lifetimes. The failure mechanism for flash memory cells is analogous to a metal fatigue mode; the device fails by refusing to write new data to specific cells that have been subject to many read-write cycles over the device"s lifetime. Premature failure of a "live USB" could be circumvented by using a flash drive with a write-lock switch as a WORM device, identical to a live CD. Originally, this potential failure mode limited the use of "live USB" system to special-purpose applications or temporary tasks, such as:
Installers of some operating systems can be stored to a flash drive instead of a CD or DVD, including various Linux distributions, Windows 7 and newer versions, and macOS. In particular, Mac OS X 10.7 is distributed only online, through the Mac App Store, or on flash drives; for a MacBook Air with Boot Camp and no external optical drive, a flash drive can be used to run installation of Windows or Linux.
However, for installation of Windows 7 and later versions, using USB flash drive with hard disk drive emulation as detected in PC"s firmware is recommended in order to boot from it. Transcend is the only manufacturer of USB flash drives containing such feature.
Flash drives are used to carry applications that run on the host computer without requiring installation. While any standalone application can in principle be used this way, many programs store data, configuration information, etc. on the hard drive and registry of the host computer.
The U3 company works with drive makers (parent company SanDisk as well as others) to deliver custom versions of applications designed for Microsoft Windows from a special flash drive; U3-compatible devices are designed to autoload a menu when plugged into a computer running Windows. Applications must be modified for the U3 platform not to leave any data on the host machine. U3 also provides a software framework for independent software vendors interested in their platform.
Ceedo is an alternative product, with the key difference that it does not require Windows applications to be modified in order for them to be carried and run on the drive.
Similarly, other application virtualization solutions and portable application creators, such as VMware ThinApp (for Windows) or RUNZ (for Linux) can be used to run software from a flash drive without installation.
In October 2010, Apple Inc. released their newest iteration of the MacBook Air, which had the system"s restore files contained on a USB hard drive rather than the traditional install CDs, due to the Air not coming with an optical drive.
A wide range of portable applications which are all free of charge, and able to run off a computer running Windows without storing anything on the host computer"s drives or registry, can be found in the list of portable software.
Some value-added resellers are now using a flash drive as part of small-business turnkey solutions (e.g., point-of-sale systems). The drive is used as a backup medium: at the close of business each night, the drive is inserted, and a database backup is saved to the drive. Alternatively, the drive can be left inserted through the business day, and data regularly updated. In either case, the drive is removed at night and taken offsite.
Flash drives also have disadvantages. They are easy to lose and facilitate unauthorized backups. A lesser setback for flash drives is that they have only one tenth the capacity of hard drives manufactured around their time of distribution.
Many companies make small solid-state digital audio players, essentially producing flash drives with sound output and a simple user interface. Examples include the Creative MuVo, Philips GoGear and the first generation iPod shuffle. Some of these players are true USB flash drives as well as music players; others do not support general-purpose data storage. Other applications requiring storage, such as digital voice or sound recording, can also be combined with flash drive functionality.
Many of the smallest players are powered by a permanently fitted rechargeable battery, charged from the USB interface. Fancier devices that function as a digital audio player have a USB host port (type A female typically).
Digital audio files can be transported from one computer to another like any other file, and played on a compatible media player (with caveats for DRM-locked files). In addition, many home Hi-Fi and car stereo head units are now equipped with a USB port. This allows a USB flash drive containing media files in a variety of formats to be played directly on devices which support the format. Some LCD monitors for consumer HDTV viewing have a dedicated USB port through which music and video files can also be played without use of a personal computer.
Artists have sold or given away USB flash drives, with the first instance believed to be in 2004 when the German punk band Wizo released the Stick EP, only as a USB drive. In addition to five high-bitrate MP3s, it also included a video, pictures, lyrics, and guitar tablature.Nine Inch Nails and Kylie Minoguecompilation album released by the Kiss Network in April 2007.
The availability of inexpensive flash drives has enabled them to be used for promotional and marketing purposes, particularly within technical and computer-industry circles (e.g., technology trade shows). They may be given away for free, sold at less than wholesale price, or included as a bonus with another purchased product.
Usually, such drives will be custom-stamped with a company"s logo, as a form of advertising. The drive may be blank, or preloaded with graphics, documentation, web links, Flash animation or other multimedia, and free or demonstration software. Some preloaded drives are read-only, while others are configured with both read-only and user-writable segments. Such dual-partition drives are more expensive.
Flash drives can be set up to automatically launch stored presentations, websites, articles, and any other software immediately on insertion of the drive using the Microsoft Windows AutoRun feature.
In the arcade game screenshots, dance edits, and combos throughout sessions. As of software revision 21 (R21), players can also store custom songs and play them on any machine on which this feature is enabled. While use of flash drives is common, the drive must be Linux compatible.
Flash drives use little power, have no fragile moving parts, and for most capacities are small and light. Data stored on flash drives is impervious to mechanical shock, magnetic fields, scratches and dust. These properties make them suitable for transporting data from place to place and keeping the data readily at hand.
Flash drives also store data densely compared to many removable media. In mid-2009, 256 GB drives became available, with the ability to hold many times more data than a DVD (54 DVDs) or even a Blu-ray (10 BDs).
Flash drives implement the USB mass storage device class so that most modern operating systems can read and write to them without installing device drivers. The flash drives present a simple block-structured logical unit to the host operating system, hiding the individual complex implementation details of the various underlying flash memory devices. The operating system can use any file system or block addressing scheme. Some computers can boot up from flash drives.
Specially manufactured flash drives are available that have a tough rubber or metal casing designed to be waterproof and virtually "unbreakable". These flash drives retain their memory after being submerged in water, and even through a machine wash. Leaving such a flash drive out to dry completely before allowing current to run through it has been known to result in a working drive with no future problems. Channel Five"s dry ice, submerged it in various acidic liquids, ran over it with a jeep and fired it against a wall with a mortar. A company specializing in recovering lost data from computer drives managed to recover all the data on the drive.
The applications of current data tape cartridges hardly overlap those of flash drives: on tape, cost per gigabyte is very low for large volumes, but the individual drives and media are expensive. Media have a very high capacity and very fast transfer speeds, but store data sequentially and are very slow for random access of data. While disk-based backup is now the primary medium of choice for most companies, tape backup is still popular for taking data off-site for worst-case scenarios and for very large volumes (more than a few hundreds of TB). See LTO tapes.
Floppy disk drives are rarely fitted to modern computers and are obsolete for normal purposes, although internal and external drives can be fitted if required. Floppy disks may be the method of choice for transferring data to and from very old computers without USB or booting from floppy disks, and so they are sometimes used to change the firmware on, for example, BIOS chips. Devices with removable storage like older Yamaha music keyboards are also dependent on floppy disks, which require computers to process them. Newer devices are built with USB flash drive support.
Floppy disk hardware emulators exist which effectively utilize the internal connections and physical attributes of a floppy disk drive to utilize a device where a USB flash drive emulates the storage space of a floppy disk in a solid state form, and can be divided into a number of individual virtual floppy disk images using individual data channels.
The various writable and re-writable forms of CD and DVD are portable storage media supported by the vast majority of computers as of 2008. CD-R, DVD-R, and DVD+R can be written to only once, RW varieties up to about 1,000 erase/write cycles, while modern NAND-based flash drives often last for 500,000 or more erase/write cycles. DVD-RAM discs are the most suitable optical discs for data storage involving much rewriting.
Optical storage devices are among the cheapest methods of mass data storage after the hard drive. They are slower than their flash-based counterparts. Standard 120 mm optical discs are larger than flash drives and more subject to damage. Smaller optical media do exist, such as business card CD-Rs which have the same dimensions as a credit card, and the slightly less convenient but higher capacity 80 mm recordable MiniCD and Mini DVD. The small discs are more expensive than the standard size, and do not work in all drives.
Universal Disk Format (UDF) version 1.50 and above has facilities to support rewritable discs like sparing tables and virtual allocation tables, spreading usage over the entire surface of a disc and maximising life, but many older operating systems do not support this format. Packet-writing utilities such as DirectCD and InCD are available but produce discs that are not universally readable (although based on the UDF standard). The Mount Rainier standard addresses this shortcoming in CD-RW media by running the older file systems on top of it and performing defect management for those standards, but it requires support from both the CD/DVD burner and the operating system. Many drives made today do not support Mount Rainier, and many older operating systems such as Windows XP and below, and Linux kernels older than 2.6.2, do not support it (later versions do). Essentially CDs/DVDs are a good way to record a great deal of information cheaply and have the advantage of being readable by most standalone players, but they are poor at making ongoing small changes to a large collection of information. Flash drives" ability to do this is their major advantage over optical media.
Three different Micro Center-branded digital media, showing a USB flash drive, an SD card, and a Micro-SD card, all having a capacity of 8 GiB, next to a U.S 5-cent coin for size comparison
Flash memory cards, e.g., Secure Digital cards, are available in various formats and capacities, and are used by many consumer devices. However, while virtually all PCs have USB ports, allowing the use of USB flash drives, memory card readers are not commonly supplied as standard equipment (particularly with desktop computers). Although inexpensive card readers are available that read many common formats, this results in two pieces of portable equipment (card plus reader) rather than one.
Some manufacturers, aiming at a "best of both worlds" solution, have produced card readers that approach the size and form of USB flash drives (e.g., Kingston MobileLite,SanDisk MobileMatemicroSD, or Memory Stick), and often completely enclose the card, offering durability and portability approaching, if not quite equal to, that of a flash drive. Although the combined cost of a mini-reader and a memory card is usually slightly higher than a USB flash drive of comparable capacity, the reader + card solution offers additional flexibility of use, and virtually "unlimited" capacity. The ubiquity of SD cards is such that, circa 2011, due to economies of scale, their price is now less than an equivalent-capacity USB flash drive, even with the added cost of a USB SD card reader.
An additional advantage of memory cards is that many consumer devices (e.g., digital cameras, portable music players) cannot make use of USB flash drives (even if the device has a USB port), whereas the memory cards used by the devices can be read by PCs with a card reader.
Particularly with the advent of USB, external hard disks have become widely available and inexpensive. External hard disk drives currently cost less per gigabyte than flash drives and are available in larger capacities. Some hard drives support alternative and faster interfaces than USB 2.0 (e.g., Thunderbolt, FireWire and eSATA). For consecutive sector writes and reads (for example, from an unfragmented file), most hard drives can provide a much higher sustained data rate than current NAND flash memory, though mechanical latencies seriously impact hard drive performance.
Unlike solid-state memory, hard drives are susceptible to damage by shock (e.g., a short fall) and vibration, have limitations on use at high altitude, and although they are shielded by their casings, they are vulnerable when exposed to strong magnetic fields. In terms of overall mass, hard drives are usually larger and heavier than flash drives; however, hard disks sometimes weigh less per unit of storage. Like flash drives, hard disks also suffer from file fragmentation, which can reduce access speed
Audio tape cassettes and high-capacity floppy disks (e.g., Imation SuperDisk), and other forms of drives with removable magnetic media, such as the Iomega Zip drive and Jaz drives, are now largely obsolete and rarely used. There are products in today"s market that will emulate these legacy drives for both tape and disk (SCSI1/SCSI2, SASI, Magneto optic, Ricoh ZIP, Jaz, IBM3590/ Fujitsu 3490E and Bernoulli for example) in state-of-the-art Compact Flash storage devices – CF2SCSI.
As highly portable media, USB flash drives are easily lost or stolen. All USB flash drives can have their contents encrypted using third-party disk encryption software, which can often be run directly from the USB drive without installation (for example, FreeOTFE), although some, such as BitLocker, require the user to have administrative rights on every computer it is run on.
Some manufacturers have produced USB flash drives which use hardware-based encryption as part of the design,shown to have security problems, and are typically more expensive than software-based systems, which are available for free.
A minority of flash drives support biometric fingerprinting to confirm the user"s identity. As of mid-2005Microsoft Windows computers. However, there are USB drives with fingerprint scanners which use controllers that allow access to protected data without any authentication.
Some manufacturers deploy physical authentication tokens in the form of a flash drive. These are used to control access to a sensitive system by containing encryption keys or, more commonly, communicating with security software on the target machine. The system is designed so the target machine will not operate except when the flash drive device is plugged into it. Some of these "PC lock" devices also function as normal flash drives when plugged into other machines.
Like all flash memory devices, flash drives can sustain only a limited number of write and erase cycles before the drive fails.Linux in Live USB)Mozilla Firefox) designed to run from flash drives. These are typically optimized for size and configured to place temporary or intermediate files in the computer"s main RAM rather than store them temporarily on the flash drive.
When used in the same manner as external rotating drives (hard drives, optical drives, or floppy drives), i.e. in ignorance of their technology, USB drives" failure is more likely to be sudden: while rotating drives can fail instantaneously, they more frequently give some indication (noises, slowness) that they are about to fail, often with enough advance warning that data can be removed before total failure. USB drives give little or no advance warning of failure. Furthermore, when internal wear-leveling is applied to prolong life of the flash drive, once failure of even part of the memory occurs it can be difficult or impossible to use the remainder of the drive, which differs from magnetic media, where bad sectors can be marked permanently not to be used.
Most USB flash drives do not include a write protection mechanism. This feature, which gradually became less common, consists of a switch on the housing of the drive itself, that prevents the host computer from writing or modifying data on the drive. For example, write protection makes a device suitable for repairing virus-contaminated host computers without the risk of infecting a USB flash drive itself. In contrast to SD cards, write protection on USB flash drives (when available) is connected to the drive circuitry, and is handled by the drive itself instead of the host (on SD cards handling of the write-protection notch is optional).
A drawback to the small physical size of flash drives is that they are easily misplaced or otherwise lost. This is a particular problem if they contain sensitive data (see data security). As a consequence, some manufacturers have added encryption hardware to their drives, although software encryption systems which can be used in conjunction with any mass storage medium will achieve the same result. Most drives can be attached to keychains or lanyards. The USB plug is usually retractable or fitted with a removable protective cap.
Most USB-based flash technology integrates a printed circuit board with a metal tip, which is simply soldered on. As a result, the stress point is where the two pieces join. The quality control of some manufacturers does not ensure a proper solder temperature, further weakening the stress point.
In appearance similar to a USB flash drive, a USB killer is a circuit that charges up capacitors to a high voltage using the power supply pins of a USB port then discharges high voltage pulses onto the data pins. This completely standalone device can instantly and permanently damage or destroy any host hardware that it is connected to.
The New York-based Human Rights Foundation collaborated with Forum 280 and USB Memory Direct to launch the "Flash Drives for Freedom" program.American and South Korean movies and television shows, as well as a copy of the Korean Wikipedia, into North Korea to spread pro-Western sentiment.
The internals of a 32 GB Toshiba USB 3.0 flash drive. The USB 3.0 standard is becoming increasingly popular. This drive has a write speed of 60 MB/s and a read speed of 120 MB/s, making it faster than the USB 2.0 standard.
Semiconductor corporations have worked to reduce the cost of the components in a flash drive by integrating various flash drive functions in a single chip, thereby reducing the part-count and overall package-cost.
Flash drive capacities on the market increase continually. High speed has become a standard for modern flash drives. Capacities exceeding 256 GB were available on the market as early as 2009.
SanDisk has also introduced a new technology to allow controlled storage and usage of copyrighted materials on flash drives, primarily for use by students. This technology is termed FlashCP.
Jumpdrive is a Lexar trademark.disk key, disk on key (after the original M-Systems DiskOnKey drive from 2000),flash stick, gig stick, memory stick (not to be confused with the Sony Memory Stick), pen drive, USB drive, USB key, USB memory, or USB stick. For an incomplete list of alternative names, see the list of redirects to this article.
USB flash drives allow reading, writing, and erasing of data, with some allowing 1 million write/erase cycles in each cell of memory: if there were 100 uses per day, 1 million cycles could span 10,000 days or over 27 years. Some devices level the usage by auto-shifting activity to underused sections of memory.
"Определение модели контроллера и памяти флешки" [Detecting controller model and memory type of flash drive] (in Russian). usbdev.ru. 20 February 2013. Retrieved 2018-01-06.
Desreumaux, Geoff (23 August 2018). "Flash Drives For Freedom: Your Old USB Drives Can Help Overthrow Dictatorships". WeRSM - We are Social Media. Retrieved 10 January 2019.
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