Gigabyte 8I845PE-RZ User Manual page 13

1) ATX_12V (+12V Power Connector)
This connector (ATX_12V) supplies the CPU operation voltage (Vcore).
If this "ATX_12V connector" is not connected, system cannot boot.
2) ATX (ATX Power)
AC power cord should only be connected to your power supply unit after ATX power cable and
other related devices are firmly connected to the mainboard.
3) CPU_FAN (CPU Fan Connector)
Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running
under abnormal condition or damaged by overheating. The CPU fan connector supports Max.
current up to 600 m A.
4 2
3
1
Pin No. Definition
1
11
1 3.3V
2 3.3V
3 GND
4 VCC
5 GND
6 VCC
7 GND
20 8 Power Good
10
9 5V SB (stand by +5V)
10 +12V
1
- 13 -
Pin No. Definition
1 GND
2 GND
3 +12V
4 +12V
Pin No. Definition
11 3.3V
12 -12V
13 GND
14 PS_ON(soft on/off)
15 GND
16 GND
17 GND
18 -5V
19 VCC
20 VCC
Pin No. Definition
1 GND
2 +12V
3 Sense
Hardware Installation Process