U disk, called U disk, is called "USBflashdisk" in English. It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug-and-play function.
The name of USB flash drive comes from a new storage device produced by Netac Technology, which is called "USB flash drive" and is connected through USB interface. After connecting the USB interface of the computer, you can exchange data on the USB flash drive with the computer.
However, the equipment with similar technology produced later, because Netac has registered the patent, can no longer be called "USB flash drive", but changed its name to "USB flash drive". Later, the name U disk was widely known because it was simple and easy to remember.
There are many USB flash drives that support multi-ports, that is, three-way USB flash drives (USB computer port, iOS Apple interface, Android interface).
It is a small removable storage disk. There are many flash drive interfaces, such as RS-232, USB, SCSI, IEEE- 1394, E-SATA, etc. Strictly speaking, only a USB flash drive with USB interface can be called a USB flash drive. It is used to store photos, materials and images, only the size of thumb, realizing portable mobile storage, greatly improving office efficiency and making human life more convenient.
Encrypted USB flash drives are divided into two categories: the first category: hardware encryption technology, which is generally encrypted by the main control chip of the USB flash drive, has high security level, is not easy to crack and has high cost; The second category: software encryption technology, which encrypts U disk files through external servers or built-in software operations. AES algorithm is generally used. This technology is diverse, safe, and varies from job to job, and the cost is relatively low.