Mainboard PM73V
16
Power Supply Attachments
ATX Power Connector: ATXPWR, ATX12V
This mainboard provides two ATX power connectors, a 24-pin ATXPWR connector and an
8-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 Power
OK 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
5 +12V
2
Ground
6 +12V
3
Ground
7 +12V
ATX12V
4
Ground
8 +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.
