ECS B75H2-AM2 User Manual page 30

26
Connecting 4-pin power cable
The ATX12V power connector is used to provide power to the CPU.
4-pin power cable
CPU_FAN: CPU cooling FAN Power Connector
Pin
1
2
3
4
Users please note that the fan connector supports the CPU cooling fan of
1.1A ~ 2.2A (26.4W max) at +12V.
SYS_FAN: System Cooling FAN Power Connectors
Pin
1
2
3
4
ATX_POWER: ATX 24-pin Power Connector
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Signal Name
System Ground
GND
Power +12V
+12V
Sense Sensor
PWM Control
Signal Name
System Ground
GND
Power +12V
+12V
Sense Sensor
PWM Control
Signal Name
+3.3V
+3.3V
COM
+5V
COM
+5V
COM
PWR OK
+5VSB
+12V
+12V
+3.3V
Installing the Motherboard
When installing 4-pin power cable, the
latches of power cable and the ATX12V
match perfectly.
Function
Function
Pin Signal Name
13
+3.3V
14
-12V
15
COM
16
PS_ON
17
COM
18
COM
19
COM
20
-5V
21
+5V
22
+5V
23
+5V
24
COM