Compaq W4000 manual Connectors, Pin

Appendix C Keyboard

C.3 CONNECTORS

Two types of keyboard interfaces are used in Compaq systems: PS/2-type and USB-type. System units that provide a PS/2 connector will ship with a PS/2-type keyboard but may also support simultaneous connection of a USB keyboard. Systems that do not provide a PS/2 interface will ship with a USB keyboard. For a detailed description of the PS/2 and USB interfaces refer to chapter 5 “Input/Output” of this guide. The keyboard cable connectors and their pinouts are described in the following figures:

Pin Function

1Data

2Not connected

3Ground

4+5 VDC

5Clock

6Not connected

5 6

34 1 2

Figure C–9.PS/2 Keyboard Cable Connector (Male)

Pin Function

1+5 VDC

2Data (+)

3Data (-)

4Ground

4

3

2

1

Figure C–10.USB Keyboard Cable Connector (Male)

C-16Compaq Personal Computers

Changed - July 2000