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Ncch-dl fan connectors, Cpu_fan1 rear_fan1, Frnt_fan2 – Asus AP1720-E2 User Manual

Page 102: Cpu_fan2 frnt_fan1, Rear_fan2, Ncch-dl system panel connector

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Chapter 4: Motherboard info

4-14

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.

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!

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

®

NCCH-DL Fan connectors

GND

Rotation

+12V

CPU_FAN1

REAR_FAN1

GND

Rotation

+12V

FRNT_FAN2

GND

Rotation

+12V

CPU_FAN2

FRNT_FAN1

GND

Rotation

+12V

REAR_FAN2

GND
FAN Power
FAN Speed
PWM Control

GND

F

AN Power

F

AN Speed

PWM Control

CPU_FAN1

CPU_FAN2

REAR_FAN1

REAR_FAN2

FRNT_FAN1
FRNT_FAN2

14. System panel connector (20-pin PANEL1)

This connector accommodates several system front panel functions.

NCCH-DL

®

NCCH-DL System panel connector

PLED-

MLED

PWR

PLED+

+5V

Speaker

PLED

Ground

+5VSB

RESET

MLED

Ground

Reset

HD_LED+

HD_LED-

PWR_SW

LAN_LINK

LAN_ACT

Ground

SMI

ExtSMI#

Keylock

Ground

KEYLOCK

SPKR