Chapter 5: Advanced Motherboard Setup
5-15
ATX Power 24-pin Connector
Pin Definitions (JPW1)
Pin# Definition Pin # Definition
13
+3.3V
1
+3.3V
14
-12V
2
+3.3V
15
COM
3
COM
16
PS_ON
4
+5V
17
COM
5
COM
18
COM
6
+5V
19
COM
7
COM
20
Res (NC)
8
PWR_OK
21
+5V
9
5VSB
22
+5V
10
+12V
23
+5V
11
+12V
24
COM
12
+3.3V
24-pin ATX Power Connector (JPW1)
The 24-pin power connector is used
to provide power to the motherboard.
This connector meets the SSI EPS 12V
specification.
(Required)
ATX 4-pin CPU
Power Connector
Pin Definitions
Pins Definition
1 and 2
Ground
3 and 4
+12V
4-pin ATX Power Connector (JPW2)
The 4-pin ATX power connector is used
to provide additional power to the CPU.
Note:
Either JPW1 or JPW2 may be used
as the main power input
Fan Header
Pin Definitions
Pin# Definition
1
Ground
2
+12V
3
Tachometer
4
PWM_Control
Fan Headers
The motherboard has three fan headers
(Fan1~Fan3). These fans are 4-pin fan
headers. Although Pins 1~3 of the fan
headers are backward compatible with
the traditional 3-pin fans, please use 4-pin
fans on the motherboard to enable the
motherboard to control fan speed through
the BIOS. .
Note: The speeds of 4-pin (PWM) fans
are controlled by Thermal Management
using BIOS Hardware Monitoring in the
Advanced Settings. (The default setting
is Disabled.)
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