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A.1.2 Keyboard/Mouse Connector Signals
Pin Signal Name Signal Description
1 Gnd Ground
2 Gnd Ground
3 +5 VDC +5 VDC
4 Mse-rxd Mouse receive data
5 Kbd-txd Keyboard out
6 Kbd-rxd Keyboard in
7 Kbd-pwk Keyboard power on
8 +5 VDC +5 VDC
A.2 Reference for the Serial Port A and B
Connectors
The serial port A and B connectors (J2902 and J2903, respectively) are DB-25 type
connectors located on the main logic board back panel. Both serial ports conform to
RS-423/RS-232 specifications.
232
Sun Enterprise 220R Server Service Manual ♦ January 2000, Revision A