12
Figure1
：
20-pin power plug
Figure 2
：
24-pin power plug
(2) ATX12V (8-pin block): ATX12V Type Power Connector
This is a new defined 8-pin connector that usually comes with ATX Power Supply that
supports extra 12V voltage to maintain system power consumption. Without this
connector might cause system unstable because the power supply can not provide
sufficient current for system.
Pin1
4
5
8
Pin No.
1
2
3
4
Definition
GND GND GND GND
Pin No.
5
6
7
8
Definition
+12V +12V +12V +12V
(3) CPUFAN1/ CPUFAN2 (4-pin): CPUFAN Connectors
CPUFAN1
Pin1
Fa
n S
pe
ed
G
N
D
+1
2V
F
an
P
ow
er
C
on
tro
l
Fan Speed
GND
Pin1
+12V Fan Power
CPUFAN2
Control
CPUFAN2
CPUFAN1
