Asus NCL-D User Manual - Page 51

7 . 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. NCL-DE Series ® COM2 PIN 1 NCL-DE Series Serial port connectors The serial port module is purchased separately. 8 . CPU and system fan connectors (3-pin CPU_FAN1/2, REAR_FAN1/2, FRNT_FAN1/2) The fan connectors support cooling fans of 350 mA ~ 740 mA (8.88 W max.) or a total of 2.1 A ~ 4.44 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! CPU_FAN1 REAR_FAN2 CPU_FAN1 CPU_FAN2 NCL-DE Series ® GND FAN Power FAN Speed PWM Control PWM Control FAN Speed FAN Power GND REAR_FAN1 CPU_FAN2 FRNT_FAN1 FRNT_FAN2 NCL-DE Series Fan connectors REAR_FAN1 GND +12V Rotation FRNT_FAN1 GND +12V Rotation REAR_FAN2 Rotation +12V GND FRNT_FAN2 GND +12V Rotation ASUS NCL-DE Series 2-31