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13. CPU and system fan connectors (4-pin CPU_FAN1/2,
3-pin REAR_FAN1/2, 3-pin FRNT_FAN1/2)
The fan connectors support cooling fans of 350mA~740mA (8.88W
max.) or a total of 2.1A~4.44A (53.28W 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.
The CPU fan connectors support either a 3-pin or a 4-pin fan cable
plug. Both connectors are slotted to ensure connection in correct
orientation.
NCCH-DL Fan connectors
Do not forget to connect the fan cables to the fan connectors. Lack of
sufficient air flow within the system may damage the motherboard
components. These are not jumpers! DO NOT place jumper caps on
the fan connectors!
14. System panel connector (20-pin PANEL1)
This connector accommodates several system front panel functions.
NCCH-DL System panel connector
ASUS NCCH-DL motherboard
CPU_FAN1
REAR_FAN1
GND
FAN Power
CPU_FAN1
FAN Speed
PWM Control
CPU_FAN2
CPU_FAN2
REAR_FAN2
FRNT_FAN1
FRNT_FAN1
FRNT_FAN2
KEYLOCK
PLED
MLED
REAR_FAN1
Rotation
+12V
GND
REAR_FAN2
FRNT_FAN2
SPKR
RESET
PWR_SW
SMI
2-33
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