A USB device is any electronic device that interfaces with a computer through the Universal Serial Bus (USB) port. If this gadget or device has the ability to store large amounts of data, it is treated by computer operating systems as a USB mass storage device. Some examples include memory cards or thumb drives, digital cameras, flash memory cards, MP3 players, and external CD/DVD players.
USB flash drive.
The computer can recognize and interoperate with USB devices thanks to a set of protocols developed by the USB Implementers Forum (USB-IF), a non-profit organization dedicated to the development and maintenance of USB standards. These communication protocols are grouped together as the USB mass storage device class. USB-IF members include Microsoft® and Apple®, among others, making USB standards universal rather than proprietary. A Macintosh® computer will detect a USB device in the same way as a PC computer, so your memory stick or other external USB device will work with all computers, regardless of brand or operating system.
USB cables are used to connect devices – such as printers, keyboards and music players – to computers.
Thanks to these protocols, many devices can use the USB port for plug-and-play functionality adding considerable value to the system. It’s almost impossible to imagine living without some of the USB mass storage devices we’ve become accustomed to using, including external hard drives and personal digital assistants that combine palmtop computers with cell phone service. This class of protocols can also recognize some newer cell phones, although most phones require proprietary USB drivers.
Devices using USB 3.0 technology can have speeds of up to 5000 Mbps.
Data transfer rates for USB-connected devices have improved over the years. The first standard, USB 1.0, operates at 1.2 Megabits per second (mbps) and is still used for USB keyboards, mice, and joysticks due to its low requirements. Other devices, such as memory cards, used the USB 1.1 protocol which operated at 12 Mbps. USB 1.1 was replaced by USB 2.0, which increased the speed to 480 Mbps. USB 3.0 is the newest standard with a data transfer rate about ten times faster at 5,000 Mbps (5 Gigabits/s).
USB 3.0 will certainly make the USB mass storage device even more popular, if that’s possible. USB devices are supposedly the most successful and ubiquitous devices of our time. Data transfer rate 3.0 will dramatically reduce backup time to external drives and multimedia file transfers between digital film cameras, flash cards and other storage media. If you are looking for a USB device on the market, please check 3.0 compatibility before purchasing.
Newer cell phones may have the ability to be used as a USB storage device.