HP XU - Manual (Page 115)

English 99
4 Technical Information
System Connectors and Switches
Front Panel Microphone
Connector The Front Panel Microphone Connector, labeled “Front Panel Micro,” is
a 3-pin connector. The Audio signal from this connector is directly
mixed with the signal from the rear panel Microphone jack. The
connector has the following pin assignments:
System Board Switches
Switches 1 through 5 are used for processor settings (see page 55) and
should not be changed. Replacing the processor with a different
processor is not supported by HP.
Switches 6 to 10 are used as shown in the following table:
Pin Signal I/O
1 MIC signal + power (tip) IN
2 Analog Ground
3 MIC signal + power (ring)
System Board
Switches
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