Introduction to U disk
• A USB flash drive, also known as a flash drive, is a small portable storage device that uses a USB interface to connect to a computer and usually uses flash memory for data storage. General U disk size is very small, light weight, can be written repeatedly, after the advent of rapid popularity and replace the traditional floppy disk and floppy disk drive. Sometimes the card reader is also classified as a USB flash drive, but the memory chip of such devices is not built in, but can be replaced by a memory card.
• Compared to other portable storage devices (especially floppy disks), USB flash drives have many advantages: they take up less space, can store more data, read and write faster, and will not become unusable due to scratching or mold. This type of USB storage device uses the USB mass storage device standard and has built-in support in modern operating systems such as Windows, macOS, Linux, and Unix.
• Usb sticks usually have a plastic or metal case and contain a small printed circuit board inside, making them small enough to fit in a pocket like a keyring accessory or on a neck string. Only the USB connector protrudes out of the protective case and is usually covered by a small cover. Most USB sticks use a standard Type-AUSB connector, which allows them to be plugged directly into a USB port on a personal computer.
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