
Connectors and Jumper Blocks
S875WP1-E TPS
Revision 4.0
40
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).
Table 20. Power Connector Pin-out (J2J2)
Pin Signal Color
Pin Signal Color
1 +3.3Vdc
Orange
13 +3.3Vdc
Orange
2 +3.3Vdc
Orange
14 -12Vdc
Blue
3 COM
Black 15 COM
Black
4 +5Vdc
Red 16 PS_ON#
Green
5 COM
Black 17 COM
Black
6 +5Vdc
Red 18 COM
Black
7 COM
Black 19 COM
Black
8 PWR_OK Gray 20 RSVD_(-5V)
White
9 5VSB
Purple
21 +5Vdc
Red
10 +12Vdc
Yellow 22 +5Vdc
Red
11 +12Vdc
Yellow 23 +5Vdc
Red
12 +3.3Vdc
Orange
24 COM
Black
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
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.