IBM Trackpoint Iv 104 Key Black Keyboard with Int. Pointing Device Connection 1 x keyboard - generic - 6 pin mini-DIN (PS/2 style), 1 x mouse - generic - 6 pin mini-DIN (PS/2 style) Operating System Required	IBM OS/2 Warp 4.0, Microsoft DOS, Microsoft Windows 3.1, Microsoft Windows 95/98, Microsoft Windows NT 4.0 Keyboard Type	Standard Interface	PS/2 Compatibility	PC Form Factor	External