1, the full name of U disk is USB flash drive, and the English name is USB flash drive. 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. 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 by USB interface. After the USB flash drive is connected to the USB interface of the computer, the data of the USB flash drive can be exchanged 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".
2. Solid state hard disk (SSD). Solid-state hard disk is a hard disk composed of solid-state electronic memory chip array, which is composed of control unit and storage unit (FLASH chip and DRAM chip). Solid-state hard disk is exactly the same as ordinary hard disk in terms of interface, function and usage, and the product shape and size are also exactly the same as ordinary hard disk. Widely used in military, vehicle, industrial control, video monitoring, network monitoring, network terminals, electric power, medical care, aviation, navigation equipment and other fields.