ECS A55F-A2, User Manual, Page: 27 / 64

23
Installing the Motherboard
CPU_FAN: Cooling FAN Power Connector
Users please note that the fan connector supports the CPU cooling
fan of 1.1A~2.2A (26.4W max.) at +12V.
1
GND System Ground
2
+12V Power +12V
3
Sense Sensor
4
PWM CPU FAN control
Function Pin Signal Name
ATX_POWER: ATX 24-pin Power Connector
1
+3.3V
13
+3.3V
2
+3.3V
14
-12V
3
Ground
15
Ground
4
+5V
16
PS_ON
5
Ground
17
Ground
6
+5V
18
Ground
7
Ground
19
Ground
8
PWRGD
20
-5V
9
+5VSB
21
+5V
10
+12V
22
+5V
11
+12V
23
+5V
12
+3.3V
24
Ground
Pin Signal Name Pin Signal Name
When installing 4-pin power cable, the
latch falls on the left side of the
ATX12V connector.
4-pin power cable
Users please note that the 8-pin and 4-pin power cables can both be con-
nected to the ATX12V connector.
When installing 8-pin power cable, the
latches of power cable and the ATX12V
connector match perfectly.
Connecting 8/4-pin power cable
8-pin power cable
* For reference only
* For reference only