USB is the most widely used external bus standard in the PC field. It is used to regulate the connection and communication between computers and external devices. The USB interface supports plug-and-play and hot-swappable functions of the device. With the rapid development of computer hardware, the application of USB has increased the speed of data transmission between external devices. The biggest benefit of the increase in speed for users is that users can use more efficient external devices, such as USB 2.0 scanners and scans. A 4M picture only takes about 0.1 seconds, and the work efficiency is greatly improved.
According to different interfaces and data lines, USB supports devices: mouse, keyboard, printer, scanner, camera, flash disk, MP3 player, mobile phone, digital camera, mobile hard disk, external optical floppy drive, USB network card, ADSL Modem, Cable Modem And other electronic products.
