Asus DSBF-DM User Manual - Page 58

11. CPU and system fan connectors (4-pin CPU_FAN1/2, REAR_FAN1/2, FRNT_FAN1/2/3/4) The fan connectors support cooling fans of 350 mA ~ 740 mA (8.88 W max.) or a total of 3.15 A ~ 6.66 A (53.28 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. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors! DSBF-DM Series GND FAN Power FAN Speed PWM Control CPU_FAN1 REAR_FAN1 REAR_FAN2 CPU_FAN1 PWM Control FAN Speed FAN Power GND CPU_FAN2 CPU_FAN2 REAR_FAN1 REAR_FAN2 PWM Control FRNT_FAN1 FAN Speed FRNT_FAN2 FAN Power FRNT_FAN3 ® FRNT_FAN4 GND PWM Control FAN Speed FAN Power GND FRNT_FAN1 FRNT_FAN2 FRNT_FAN3 FRNT_FAN4 GND FAN Power FAN Speed PWM Control GND FAN Power FAN Speed PWM Control GND FAN Power FAN Speed PWM Control GND FAN Power FAN Speed PWM Control DSBF-DM Series Fan connectors 12. Serial port connector (10-1 pin COM2) This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis. DSBF-DM Series ® COM2 PIN 1 DSBF-DM Series Serial port connectors The serial port module is purchased separately. 2-38 Chapter 2: Hardware information