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9.
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.
M4A78LT-M
M4A78LT-M 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 connector supports the ASUS Q-Fan feature.
10.
Serial port connectors (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port bracket (COM1) is purchased separately.
M4A78LT-M
M4A78LT-M Serial port (COM1) connector
ASUS M4A78LT-M
CPU_FAN
CHA_FAN
Rotation
+12V
GND
COM1
PIN 1
1-29
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