IBM PS/2 65 SX Hardware Maintenance Reference page 18

IBM PS/2 Model 65 SX HMR
Keyboard Connector and Pointing-Device Connector
1.2.9 Keyboard Connector and Pointing-Device Connector
|The two 6-pin connectors at the rear of the system board are for
|connecting a keyboard and a pointing device (mouse). The keyboard
|connector is marked with a small keyboard figure molded into the back
|panel; the unmarked connector is for the pointing device. The interface
|logic is the same for both. A fuse on the system board protects the
|system board, keyboard, and pointing device.
1.2.9 - 1