Serial Interface Connectors; Keyboard And Mouse Connectors; Ps/2-Style Keyboard And Mouse Interface Connectors; Serial Interface Pin Assignments - NEC POWERMATE PROFESSIONAL 9000 Service Manual

A-6 Connector Pin Assignments

Serial Interface Connectors

Figure A-8 shows the serial interface connector(s) on the system board. Table A-3 lists the
pin assignments.
Pin
1
2
3
4
5
6
7
8
9

Keyboard and Mouse Connectors

Figure A-9 shows the keyboard and mouse connectors on the system board. The keyboard
and mouse are PS/2-style connectors and can be plugged into either connector. The system
unit detects their presence at power on. Table A-4 lists the pin assignments.
Figure A-9 PS/2-Style Keyboard and Mouse Interface Connectors
Figure A-8 Serial Interface Connectors
Table A-3 Serial Interface Pin Assignments
Signal Name
DCD
Serial In-
Serial Out-
DTR
GND
DSR
RTS
CTS
RI
6
4
2
5
3
1