ps2接口是目前最常见的鼠标接口，最初是IBM公司的专利，俗称“小口”。这是一种鼠标和键盘的专用接口，是一种6针的圆型接口。但鼠标为空脚。PS/2接口的传输速率比COM接口稍快一些，而且是ATX主板的标准接口，是目前应用最为广只使用其中的4针传输数据和供电，其余2个泛的鼠标接口之一-PS2 interface is by far the most common mouse interfaces, the original is IBM s patent, commonly known as "small". This is a kind of special mouse and keyboard interface, is a kind of 6 needle circular interface. But the mouse only use one of the four needles to transmit data and power supply, the rest 2 is empty. The PS/2 interface transmission rate slightly faster than the COM interface, and is the standard interface ATX motherboard, is one of the most widely used the mouse interface