USB, which is an input/output port design like the common parallel, serial, keyboard and mouse ports on PCs, allows devices to work automatically and without conflicts between each other.

• USB与PC机上常见的并行、串行、键盘和鼠标器端口一样，是一种输入/输出端口设计，它让设备自动工作，互相之间不会出现冲突。