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Appendix C Keyboard
Compaq Personal Computers
Changed - July 2000
C-16
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
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)
6
5
4
3
2
1
1
2
3
4
Содержание iPAQ 1.0
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