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1/2) ATX_12V_2X4/ATX (2x4 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.
To meet expansion requirements, it is recommended that a power supply that can withstand high
power consumption be used (500W or greater). If a power supply is used that does not provide the
required power, the result can lead to an unstable or unbootable system.
5
8
1
4
ATX_12V_2X4
12
24
1
13
ATX
3/4) CPU_FAN/SYS_FAN1/SYS_FAN2/SYS_FAN3 (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), two 4-pin (SYS_FAN1/SYS_FAN2) and a 3-pin
(SYS_FAN3) system fan headers. 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.
1
1
CPU_FAN
SYS_FAN1
1
1
SYS_FAN2
SYS_FAN3
• 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.
ATX_12V_2X4:
Pin No. Definition
GND (Only for 2x4-pin 12V)
1
GND (Only for 2x4-pin 12V)
2
GND
3
GND
4
ATX:
Pin No. Definition
1
3.3V
2
3.3V
GND
3
4
+5V
GND
5
6
+5V
GND
7
8
Power Good
5VSB (stand by +5V)
9
10
+12V
11
+12V (Only for 2x12-pin
ATX)
12
3.3V (Only for 2x12-pin
ATX)
CPU_FAN:
SYS_FAN1/2:
Pin No. Definition
Pin No. Definition
GND
1
1
2
+12V
2
3
3
Sense
4
4
Speed Control
- 13 -
Definition
Pin No.
+12V (Only for 2x4-pin 12V)
5
+12V (Only for 2x4-pin 12V)
6
7
+12V
8
+12V
Pin No. Definition
13
3.3V
14
-12V
GND
15
PS_ON (soft On/Off)
16
GND
17
GND
18
GND
19
20
NC
21
+5V
22
+5V
+5V (Only for 2x12-pin ATX)
23
GND (Only for 2x12-pin ATX)
24
SYS_FAN3:
Pin No. Definition
GND
GND
1
Speed Control
2
+12V
Sense
3
N/A
VCC
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