Mainboard PM945GC
16
Power Supply Attachments
ATX Power Connector: ATXPWR, ATX12V
These mainboards provide two ATX power connectors, one 24-pin ATXPWR connector and one 4-pin
ATX12V connector. You must use a power supply that has both of these connectors and both connectors
must be attached before the system is powered on. These power connectors support several power
management functions such as the instant power-on function. The connector pins are described below.
Pin
Assignment
Pin
Assignment
1 +3.3V
13
+3.3V
2 +3.3V
14
-12V
3 Ground 15
Ground
4
+5V
16
Soft Power ON
5 Ground 17
Ground
6 +5V 18
Ground
7 Ground 19
Ground
8 PW_ON 20
-5V
9
+5V standby voltage
21
+5V
10 +12V 22
+5V
11 +12V 23
+5V
ATXPWR
12 +3.3V 24
Ground
Pin
Assignment
Pin
Assignment
1 Ground 3
+12V
ATX12V
2
Ground
4 +12V
Attention
In general, power cords are designed and should be attached with a specific
direction. The black wire of the power cord is Ground and should be attached
onto the header location of Ground.
