18
SPEAK
SPEA
K
NC
NC
VC
C
PWRLED1
PIN1
PIN1
PW
R
L
ED
+
PW
R
L
E
D
-
PW
R
L
E
D
-
(12)FAN Speed Headers (3-pin): CPUFAN1, SYSFAN1/SYSFAN2
SYSFAN1
1
3
Fa
n C
loc
k
G
ND
GND
Fan Clock
GND
VCC
DET
Control
CPUFAN
1
4
1
SYSFAN2
FAN Headers
+1
2
V
F
a
n
P
o
we
r
+12V Fan Power