38 chapter 2: hardware information, Dsbf-dm series fan connectors, The serial port module is purchased separately – Asus DSBF-DM/SAS User Manual
Page 58: Dsbf-dm series serial port connectors, Com2

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Chapter 2: Hardware information
11. CPU and system fan connectors (4-pin CPU_FAN1/2, REAR_FAN1/2,
FRNT_FAN1/2/3/4)
The fan connectors support cooling fans of 350 mA ~ 740 mA (8.88 W max.)
or a total of 3.15 A ~ 6.66 A (53.28 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!
®
DSBF-DM Series
DSBF-DM Series Fan connectors
CPU_FAN1
CPU_FAN2
GND FAN Powe
r
FAN Speed PWM Contro
l
REAR_FAN1
REAR_FAN2
FRNT_FAN1
GND
FAN Power
FAN Speed
PWM Control
CPU_FAN1
CPU_FAN2
REAR_FAN1
REAR_FAN2
FRNT_FAN1
FRNT_FAN2
FRNT_FAN3
FRNT_FAN4
GND FAN Powe
r
FAN Spee
d
PWM Contro
l
GND
FAN Powe
r
FAN Speed
PWM Control
GND
FAN Power
FAN Speed
PWM Control
GND FAN Powe
r
FAN Speed PWM Contro
l
FRNT_FAN2
GND FAN Powe
r
FAN Speed PWM Contro
l
FRNT_FAN3
GND FAN Powe
r
FAN Speed PWM Contro
l
FRNT_FAN4
12. 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.
The serial port module is purchased separately.
®
DSBF-DM Series
DSBF-DM Series Serial port connectors
PIN 1
COM2