Asus K8N-DL User Guide - Page 45

5 . CPU, front, and rear fan connectors (3-pin CPU_FAN1, CPU_FAN2, FRNT_FAN1, FRNT_FAN2, REAR-FAN1, REAR_FAN2) The fan connectors support cooling fans of 350mA~2000mA (24 W max.) or a total of 1A~3.48A (41.76 W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector. • Do not forget to connect the fan cables to the fan connectors. Lack of sufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors! • The ASUS Smart Q-Fan function is supported using the CPU fans (CPU_FAN1, CPU_FAN2) connectors. • The chipset fan is synchronized with the CPU fans. CPU_FAN2 CPU_FAN1 REAR_FAN1 REAR_FAN2 ® K8N-DL FRNT_FAN1 FRNT_FAN2 K8N-DL Fan connectors CPU_FAN1 Rotation +12V GND CPU_FAN2 Rotation +12V GND FRNT_FAN1 GND +12V Rotation FRNT_FAN2 GND +12V Rotation REAR_FAN1 Rotation +12V GND REAR_FAN2 GND +12V Rotation 6 . Backplane SMBus connector (6-1 pin BPSMB1) This connector allows you to connect SMBus (System Management Bus) devices. Devices communicate with an SMBus host and /or other SMBus devices using the SMBus interface. ® K8N-DL K8N-DL SMBus connector ASUS K8N-DL BPSMB1 1 FAN_PWM I2C_4_CLK# GND I2C_4_DATA# +5VSB 2-25