B-6 Connector Pin Assignments
POWER SUPPLY (PRIMARY)
Voltages from the power supply are input to the system board through the primary power
supply connector. Table B-6 shows the connector pin locations and pin assignments.
Table B-6 Primary Power Supply Connector Pin Assignments
Pin
Signal
Pin
Signal
1
+3.3 V
11
+3.3 V
2
+3.3 V
12
–12 V
3
Ground
13
Ground
4
+5 V
14
PS-ON# (Power supply remote
on/off control
5
Ground
15
Ground
6
+5 V
16
Ground
7
Ground
17
Ground
8
PWRGD (Power Good)
18
–5 V
9
+5 VSB (Standby for real-time clock)
19
+5 V
10
+12 V
20
+5 V
KEYBOARD AND MOUSE CONNECTORS
The keyboard and mouse use standard PS/2 connectors. Pin assignments are given in
Table B-7.
Table B-7 Keyboard and Mouse Connector Pin Assignments
Pin
Keyboard Connector
Mouse Connector
1
Keyboard Data
Mouse Data
2
No connect
No connect
3
Ground
Ground
4
+5V (fused)
+5V (fused)
5
Keyboard Clock
Mouse Clock
6
No connect
No connect