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Chapter 3: Replacing Pre-Installed Components 45
J3 LAN/ID LED Connector
FAN Signal Related Connector Pin Definition
NOTE: The FAN signal naming is based on HW circuit design only. It might
be different from the system fan naming.
J4 Fan TACH & PWM Connector
J7 Fan TACH & PWM Connector
J8 PWM Connector
1 LAN1_LED+ 2 LAN1_LED-
3 LAN2_LED+ 4 LAN2_LED-
5 LAN3_LED+ 6 LAN3_LED-
7 ID_LED+ 8 ID_LED-
9 ID_SW+ 10 ID_SW-
11 KEY PIN 12 NC
1GND
2NC
3 FAN1_TACH
4 PWM1 (Default)
1GND
2NC
3 FAN7_TACH
4 PWM1 (Default)
1GND
2PWM2
3 FAN1_TACH