Chapter 4. Power Supply
Power Connectors
Note: The total power used by the any of following connectors must not exceed the amount shown in
“Component Outputs” on page 21.
The power supply provides 4-pin connectors for attaching internal devices. The following table lists the pin
assignments for these connectors.
Connectors with 6 pins are used to connect the power supply to the system board and riser card. The
following table lists the pin assignments for these connectors.
Connectors with 3 pins are provided to connect the power supply with the system board and a LAN
feature. The following table lists the pin assignments for these connectors.
Table 28. Pin Assignments for 4-Pin Power Connectors
Connector
Location
Pin 1
Pin 2
Pin 3
Pin 4
P3
3.5-inch diskette drive
+
5 V
Ground
Ground
+
12 V
P4
–
+
12 V
Ground
Ground
+
5 V
P5
DASD
+
12 V
Ground
Ground
+
5 V
P6
DASD
+
12 V
Ground
Ground
+
5 V
P7
DASD
+
12 V
Ground
Ground
+
5 V
P8
DASD
+
12 V
Ground
Ground
+
5 V
Table 29. Pin Assignments for 6-Pin Power Connectors
Connector
Location
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
P1
System board
Power
Good
+
5 V
+
12 V
−
12 V
Ground
Ground
P2
System board
Ground
Ground
−
5 V
+
5 V
+
5 V
+
5 V
P10
Riser 3 V
+
3.3 V
+
3.3 V
+
3.3 V
Ground
Ground
Ground
P11
System board
3 V
+
3.3 V
+
3.3 V
+
3.3 V
Ground
Ground
Ground
Table 30. Pin Assignments for 3-Pin Power Connectors
Connector
Location
Pin 1
Pin 2
Pin 3
P9
6
System board
+
5 V
Control
Ground
P12
LAN
+
5 V
Control
Ground
6
AUX 5
Chapter 4. Power Supply
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