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2–12 System Configuration and Connectors
AlphaPC 164SX Connector Pinouts
2.7.7 COM1/COM2 Serial Line Connector Pinouts
Table 2–8 shows the COM1/COM2 serial line connector pinouts.
2.7.8 Keyboard/Mouse Connector Pinouts
Table 2–9 shows the keyboard/mouse connector pinouts.
Table 2–8 COM1/COM2 Serial Line Connector Pinouts (J3)
COM1 Pin
(Top) COM1 Signal
COM2 Pin
(Bottom) COM2 Signal
1 DCD1 1 DCD2
2 RxD1 2 RxD2
3 TxD1 3 TxD2
4 DTR1 4 DTR2
5 SG1 5 SG2
6 DSR1 6 DSR2
7 RTS1 7 RTS2
8 CTS1 8 CTS2
9 RI1 9 RI2
Table 2–9 Keyboard/Mouse Connector Pinouts (J4)
Keyboard Pin
(Top) Keyboard Signal
Mouse Pin
(Bottom) Mouse Signal
1 KBDATA 1 MSDATA
2NC 2NC
3Gnd 3 Gnd
4 Vdd 4 Vdd
5 KBCLK 5 MSCLK
6NC 6NC