USB interface form
USB is a necessary interface for computer external connection, which can be called universal interface. It can be divided into type A, type B and type C. Usually, it is type A.
1.Type A rectangle, generally used in personal computers, is mainly used to connect mobile phones, wireless network cards, USB flash drives, mobile optical drives, small-capacity mobile hard disks, etc., and is the most widely used.
2.Type B is generally used to connect 3.5-inch mobile hard disks, printers, and monitors.
3. The upgraded versions of Type C Type-A and B are oval, which have the characteristics of supporting positive and negative symmetric plugging and unplugging (both sides can be plugged in), supporting greater power transmission and bidirectional power transmission, and the interface is slim, and it integrates functions such as charging, display and data transmission.
The size is about 8.3mm×2.5mm, which gradually replaces the Micro USB interface. Type C appeared after USB 3.1, and its highlights are slimmer design, faster transmission speed (up to 10Gbps) and more powerful power transmission (up to 100W). Solved the worldwide problem of "USB can never be plugged in correctly".