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COM1, 2, 3, 4, 5, 6 Port Headers
(9-pin COM1: see p.8, No. 33)
(9-pin COM2: see p.8, No. 35)
(9-pin COM3: see p.8, No. 30)
(9-pin COM4: see p.8, No. 25)
(9-pin COM5: see p.8, No. 27)
(9-pin COM6: see p.8, No. 21)
This motherboard supports RS232/422/485 on COM1, 2 port. Please refer to below
table for the pin definition. In addition, COM1, 2 port (RS232/422/485) can be
adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration. You may
refer to page 32 for details.
System Panel Header
(9-pin PANEL1)
(see p.8, No. 10)
Connect the power switch, reset switch and system status indicator on the
chassis to this header according to the pin assignments below. Note the
positive and negative pins before connecting the cables.
PWRBTN (Power Switch):
Connect to the power switch on the chassis front panel. You may configure
the way to turn off your system using the power switch.
RESET (Reset Switch):
Connect to the reset switch on the chassis front panel. Press the reset
switch to restart the computer if the computer freezes and fails to perform a
normal restart.
Signal
PIN
PIN
Name
2
RRXD
1
DDCD#
COM1, 2 Ports Pin Definition
PIN
RS232
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
PWR
PLED+
PLED-
PWRBTN#
1
GND
HDLED-
HDLED+
1
Signal
Signal
PIN
Name
Name
4
DDTR#
6
DDSR#
3
TTXD
5
GND
RS422
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
PWR
This header accommodates
several system front panel
GND
functions.
GND
RESET#
17
Signal
Signal
PIN
PIN
Name
Name
8
CCTS#
10
NC
7
RRTS#
9
PWR
RS485
RTX-
N/A
RTX+
N/A
GND
N/A
N/A
N/A
PWR
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