Asus H81T - Manual (Page 21)

ASUS H81T 1-13
1.7.2 Internal connectors
1. Serial port connector (10-1 pin COM)
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.
The COM module is purchased separately.
H81T
H81T Serial port connector
PIN 1
COM
DCD TXD GND RTS
RI
RXD DTR DSR CTS
2. CPU and chassis fan connectors (4-pin CPU_FAN, and 4-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.
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.
H81T
H81T Fan connectors
CHA_FAN
GND CHA FAN PWR CHA FAN IN +5V
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND