Power Supply (Primary; Primary Power Supply Connector Pin Assignments - NEC SP B-Series Service And Reference Manual

Power Supply (Primary)

Voltages from the power supply are input to the system board through the
primary power supply connector. The following table shows the connector pin
locations and pin assignments.

Primary Power Supply Connector Pin Assignments

Pin
1
2
3
4
5
6
7
8
9
10
B-6 Connector Pin Assignments
Signal
+3.3V
+3.3V
Ground
+5V
Ground
+5V
Ground
PWRGD (Power Good)
+5VSB
+12V
Pin
11
12
13
14
15
16
17
18
19
20
Signal
+3.3V
-12V
Ground
PS-ON# (Power supply
remote on/off control)
Ground
Ground
Ground
-5V
+5V
+5V