Hardware components of the PC
External PC connection ports
Mouse and Keyboard ports (PS/ 2 Mouse & PS/ 2 KB)

Both the keyboard and the mouse connecting ports are identical standard IBM PS/ 2 mini-DIN 6-pin plug shape. This does not mean that operation of one device connected to the other device interface is allowed, although, this is the case on some notebook designs, which have a universal PS/ 2 port.