Zotac G31 series

13
120
240
121
LOT ES
R E O EVM
Li th i um
ce l
l
CR 20 3 2
3V
SC8
120
240
121
Hardware Installation
Connecting Internal Headers
24-pin ATX Power (PW1)
PW1 is the main power supply connector located along the edge of the board next to
the DIMM slots. Make sure that the power supply cable and pins are properly aligned
with the connector on the motherboard. Firmly plug the power supply cable into the
connector and make sure it is secure.
Table 1. PW1 Pin Assignments
Connector Pin Signal Pin Signal
1 +3.3V 13 +3.3V
2 +3.3V 14 -12V
3 GND 15 GND
4 +5V 16 PS_ON
5 GND 17 GND
6 +5V 18 GND
7 GND 19 GND
8 PWROK 20 -5V
9 +5V_AUX 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 GND
112
13
24
4-pin ATX 12V Power (PW2)
PW2, the 4-pin ATX 12V power connection,
is used to provide power to the CPU. Align
the pins to the connector and press rmly
until seated.
1
2
3
4
PIN Assignment
1 GND
2 GND
3 +12V
4 +12V
PW2 - Pin Denition