A770 A2+/A740X A2+
7
2.2 FAN
H
EADERS
These fan headers support cooling-fans built in the computer. The fan
cable and connector may be different according to the fan manufacturer.
Connect the fan cable to the connector while matching the black wire to
pin#1.
C PUFAN: CPU Fan Heade r
Pin
Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
1
4
4 Smart
Fan
Control (By Fan)
SYSFAN: System Fan He aders
Pin Assignment
1 Ground
2 +12V
1
3
3
FAN RPM rate
sense
Note:
The CPUFAN and SYSFAN support 4- pin and 3-pin head connec tor. When connecting
with wires ont o c onnect ors, please note that t he red wire is t he positi ve and s houl d be
connected t o pi n#2, and the bl ac k wire is Ground and s hould be c onnect ed to GND.
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