8.CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)

Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.

CPU_FAN

M5A78L-M/USB3

GND

CPU FAN PWR

CPU FAN IN

CPU FAN PWM

CHA_FAN

Rotation +12V GND

M5A78L-M/USB3 Fan connectors

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.

Only the 4-pin CPU fan supports the ASUS Q-Fan feature.

9.Serial port connector (10-1 pin COM1)

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.

COM1

PIN 1

M5A78L-M/USB3

M5A78L-M/USB3 Serial port (COM1) connector

The COM module is purchased separately.

ASUS M5A78L-M/USB3

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