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.

REAR_FAN1

CPU_FAN1

CPU_FAN2

NCCH-DL

REAR_FAN2

FRNT_FAN1

FRNT_FAN2

NCCH-DL Fan connectors

CPU_FAN1

REAR_FAN1

 

 

 

 

 

GND

Rotation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAN Power

+12V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAN Speed

GND

 

 

 

 

 

 

 

 

PWM Control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU_FAN2

REAR_FAN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PWM Control FAN Speed FAN Power GND

Rotation +12V GND

FRNT_FAN1

FRNT_FAN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rotation +12V GND

Rotation +12V GND

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.

KEYLOCK

 

 

 

PLED

 

SPKR

 

 

 

 

PLED+

LAN LINK

PLED-

Keylock Ground

+5V

HD LED+ HD LED-

Speaker

NCCH-DL

+5VSB

 

 

 

 

 

LAN ACT

MLED

ExtSMI# Ground

PWR Ground

Reset

Ground

MLED

 

 

RESET

 

 

 

 

 

 

SMI

PWR_SW

NCCH-DL System panel connector

4-14

Chapter 4: Motherboard info