Chapter 4: motherboard information 4-12, Kfsn4-dre serial port connector, Com2 – Asus RS161-E5/PA2 User Manual
Page 60: Kfsn4-dre fan connectors

Chapter 4: Motherboard information
4-12
6. Front and rear fan connectors (3-pin FRNT_FAN1, FRNT_FAN2, FRNT_
FAN3, FRNT_FAN4, REAR_FAN1, REAR_FAN2, REAR_FAN3, REAR_
FAN4, REAR_FAN5, REAR_FAN6)
The fan connectors support cooling fans of 350mA~2000mA (24 W max.) or
a total of 1A~3.48A (41.76 W 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. Insufficient
air flow inside the system may damage the motherboard components.
These are not jumpers! DO NOT place jumper caps on the fan connectors!
• All fans feature the ASUS Smart Fan technology.
KFSN4-DRE
®
KFSN4-DRE Fan connectors
FRNT_FAN1
FRNT_FAN6
FRNT_FAN5
REAR_FAN4
REAR_FAN3
REAR_FAN2
REAR_FAN1
GND
FAN Power
FAN Speed
PWM Control
FRNT_FAN4
FRNT_FAN3
FRNT_FAN1
FRNT_FAN2
GND
FAN Powe
r
FAN Speed
PWM Contro
l
REAR_FAN4
GND
FAN Powe
r
FAN Speed
PWM Contro
l
REAR_FAN3
GND
FAN Powe
r
FAN Speed
PWM Control
REAR_FAN2
GND
FAN Powe
r
FAN Speed
PWM Contro
l
REAR_FAN1
FRNT_FAN2
GND
FAN Power
FAN Speed
PWM Control
GND
FAN Powe
r
FAN Speed
PWM Control
FRNT_FAN4
GND
FAN Powe
r
FAN Speed
PWM Control
FRNT_FAN3
GND
FAN Powe
r
FAN Speed
PWM Contro
l
REAR_FAN6
GND
FAN Powe
r
FAN Speed
PWM Contro
l
REAR_FAN5
7. Serial port connector (10-1 pin COM2)
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.
KFSN4-DRE
®
KFSN4-DRE Serial port connector
PIN1
COM2