© National Instruments
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B-7
Note
To provide adequate power to the motherboard, connect the 24-pin and
the 8-pin power connectors to the power supply. Failure to do so may void the
manufacturer's warranty on your power supply and motherboard.
Processor Power Connector
The 8-pin JPW2 must also be connected to the power supply. This connector is used to power
the processor(s).
Table B-4.
ATX Main Power 24-pin Connector Pin Definitions
Pin
Definition
Pin
Definition
13
+3.3 V
1
+3.3 V
14
-12 V
2
+3.3 V
15
Ground
3
Ground
16
PS_ON
4
+5 V
17
Ground
5
Ground
18
Ground
6
+5 V
19
Ground
7
Ground
20
Res (NC)
8
PWR_OK
21
+5 V
9
5VSB
22
+5 V
10
+12 V
23
+5 V
11
+12 V
24
Ground
12
+3.3 V
Required Connection
Table B-5.
+12 V 8-Pin Power Pin Definitions
Pin
Definition
1-4
Ground
5-8
+12 V
Required Connection
