Asus M4A78LT-M - Page 39

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.
Only the 4-pin CPU fan connector supports the ASUS Q-Fan feature.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
M4A78LT-M
M4A78LT-M fan connectors
CPU_FAN
GND CPU FAN PWR CPU FAN IN CPU FAN PWM
Rotation
+12V
GND
CHA_FAN
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
PIN 1
COM1
ASUS M4A78LT-M 1-29