
Chapter 3: Replacing Pre-Installed Components 53
Fan Signal Related Connector Pin Definitions
Note: The FAN signal naming is based on HW circuit
design only. It might be different from the system fan name.
FAN1, FAN2, FAN3: 4-pin Fan connector
J1, J2 and J3 power big 4-pin connector
25 DIOR 26 VCC
27 IORDY 28 CSEL
29 DMACK 30 VCC
31 INTRQ 32 IOCS16
33 DA1 34 PDIAG
35 DA0 36 DA2
37 CS1FX 38 CS3FX
39 DASP 40 VCC
1GND
2 VDD +12V
3TACH
4PWM
1 VDD +12V
2GND
3GND
4 VCC +5V
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