Table 20. Power Connector Pin-Out (J2J2); Table 21. 12V Cpu Power Connector (J4C1); Power Connectors - Intel S875WP1LX Specification

Connectors and Jumper Blocks
5. Connectors and Jumper Blocks
5.1

Power Connectors

The main power supply connection is obtained using either the 20-pin connector from an
ATX12V power supply, or the 24-pin connector from an EPS12V power supply. The following
table defines the pin-outs of the connector (For a 20-pin connector, the first 20 pins apply).
Pin Signal
1 +3.3Vdc
2 +3.3Vdc
3 COM
4 +5Vdc
5 COM
6 +5Vdc
7 COM
8 PWR_OK
9 5VSB
10 +12Vdc
11 +12Vdc
12 +3.3Vdc
NOTE
The board will not boot if the 12V CPU power connector is not attached to the board. The 12V
CPU power from an ATX12V power supply will only have 4 pins.
40

Table 20. Power Connector Pin-out (J2J2)

Color Pin
Orange 13
Orange 14
Black 15
Red 16
Black 17
Red 18
Black 19
Gray 20
Purple 21
Yellow 22
Yellow 23
Orange 24

Table 21. 12V CPU Power Connector (J4C1)

Pin Signal
1 Ground
2 Ground
3 Ground
4 Ground
5 +12V
6 +12V
7 +12V
8 +12V
S875WP1-E TPS
Signal Color
+3.3Vdc Orange
-12Vdc Blue
COM Black
PS_ON# Green
COM Black
COM Black
COM Black
RSVD_(-5V) White
+5Vdc Red
+5Vdc Red
+5Vdc Red
COM Black
Revision 4.0