Cpu_Fan/Sys_Fan Fan Headers - Gigabyte GA-B85N User Manual

1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the components
on the motherboard. Before connecting the power connector, first make sure the power supply is turned
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the
power supply cable to the power connector in the correct orientation.
The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected,
the computer will not start.
ATX_12V:
Pin No. Definition
1 3
2 4
ATX_12V
ATX:
Pin No. Definition
12 24
1 13
ATX
3/4) CPU_FAN/SYS_FAN (Fan Headers)
All fan headers on this motherboard are 4-pin. Most fan headers possess a foolproof insertion design.
When connecting a fan cable, be sure to connect it in the correct orientation (the black connector wire is
the ground wire). The speed control function requires the use of a fan with fan speed control design. For
optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.
CPU_FAN:
Pin No. Definition
1
1
CPU_FAN
2
3
4
• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating
may result in damage to the CPU or the system may hang.
• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers.
1 GND
2 GND
3 +12V
4 +12V
1 3.3V
2 3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 Power Good
9 5VSB (stand by +5V)
10 +12V
11 +12V (Only for 2x12-pin
ATX)
12 3.3V (Only for 2x12-pin
ATX)
GND
SYS_FAN
+12V
Sense
Speed Control
- 13 -
Pin No. Definition
13 3.3V
14 -12V
15 GND
16 PS_ON (soft On/Off)
17 GND
18 GND
19 GND
20 -5V
21 +5V
22 +5V
23 +5V (Only for 2x12-pin ATX)
24 GND (Only for 2x12-pin ATX)
SYS_FAN:
Pin No. Definition
1
1 GND
2 +12V/Speed Control
3 Sense
4 VCC