This 25 foot male PS 2 (MiniDin6) cable is designed to work with keyboards and mice that utilize the MiniDin6 connector. Before the USB connection established its dominance connecting devices to a computer, the PS 2 connector was the primary method to secure a mouse or keyboard. To extend a PS 2 mouse or PS 2 keyboard that have a built in PS 2 cable with this, you would need a PS 2 coupler. This PS 2 cable can also be used to connect a computer to a PS 2 KVM switch if you are controlling multiple computers with a single monitor, keyboard and mouse.