Asus M2N-LR/SATA - Manual (Page 30)

ASUS M2N-LR Series 2-
5. When the fan and heatsink assembly is in place, connect the CPU fan cable
to the connector on the motherboard labeled CPU_FAN.
• Do not forget to connect the CPU fan connector! Hardware monitoring
errors can occur if you fail to plug this connector.
• This connector is backward compatible to the 3-pin CPU fan connector.
M2N-LR/SATA
®
M2N-LR/SATA CPU Fan Connectors
GND
FANPWR2
FANOUT4
CPU_FAN1
GND
FANPWR2
FANOUT4
CPU_FAN2