Intel GA-945P-DS3/S3 - Manual (Page 20)

GA-945P-DS3/S3 Motherboard - 20 -
English
3/4/5) CPU_FAN / SYS_FAN / PWR_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin/4-pin (only for
CPU_FAN) power connector and possesses a foolproof connection design.
Most coolers are designed with color-coded power connector wires. A red power connector wire
indicates a positive connection and requires a +12V power voltage. The black connector wire is
the ground wire (GND).
Remember to connect the CPU/system fan cable to the CPU_FAN/SYS_FAN connector to prevent
CPU damage or system hanging caused by overheating.
1
Pin No. Definition
1 GND
2 +12V/Speed Control
3 Sense
4 Speed Control
Pin No. Definition
1 GND
2 +12V
3 Sense
CPU_FAN:
SYS_FAN/PWR_FAN:
6) NB_FAN (Chip Fan Power Connector)
The chip fan will not work if you install it in the wrong direction and sometimes the chip fan will be
damaged.
Pin No. Definition
1 GND
2 +12V
3 NC
PWR_FAN
1
1
CPU_FAN
SYS_FAN
1