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A300 Motherboard
Figure 4-24: PS/2 Pinouts
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 KB DATA 7 MS DATA
2 NC 8 NC
3 GND 9 GND
4 5V 10 5V
5 KB CLK 11 MS CLK
6 NC 12 NC
Table 4-25: Keyboard Connector Pinouts
4.3.6 Serial Port Connector (COM 1)
CN Label: CN1.B
CN Type:
DB-9 connector
CN Location: See
Figure 4-20
CN Pinouts: See Table 4-26 and Figure 4-25
The 9-pin DB-9 COM 1 serial port connector is connected to RS-232 serial
communications devices.
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DCD1 2 DSR1
3 RX1 4 RTS1
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