Gigabyte GA-J1900N-D3V User Manual page 12

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.
2 1
4 3
ATX_12V
ATX_12V:
Pin No. Definition
1 GND
2 GND
3 +12V
4 +12V
3/4) CPU_FAN/SYS_FAN (Fan Headers)
The motherboard has a 3-pin CPU fan header (CPU_FAN) and a 4-pin system fan header (SYS_FAN).
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 GND
1
2 Speed Control
CPU_FAN
3 Sense
• 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
13
ATX
ATX:
Pin No. Definition
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)
SYS_FAN
- 12 -
12
24
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 GND
1
2 Speed Control
3 Sense
4 VCC