Connectors, C.3 connectors – HP D315 User Manual

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Appendix C Keyboard

hp/Compaq Personal Computers

Changed - April 2003

C-16

C.3 CONNECTORS

Two types of keyboard interfaces are used in HP/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
1 Data
2 Not

connected

3 Ground
4 +5

VDC

5 Clock
6 Not

connected

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

Pin Function
1 +5

VDC

2 Data

(-)

3 Data

(+)

4 Ground

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