ASRock IMB-196 [18/42] Com port headers

ASRock IMB-196 [18/42] Com port headers
18
System Panel Header This header accommodates
(9-pin PANEL1)
several system front panel
(see p.8, No. 21)
functions.
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 congure
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.
COM Port Headers
(10-pin COM1~6: see p.8, No. 23)
This motherboard supports RS232/422/485 on COM1, 2 ports. Please refer to below
table for the pin denition. In addition, COM1, 2 ports (RS232/422/485) can be
adjusted in BIOS setup utility > Advanced Screen > Super IO Conguration. You
may refer to page 34 for details.
COM1, 2 Port Pin Denition
GND
RESET#
PWRBTN#
PLED-
PLED+
GND
HDLED-
HDLED+
1
GND
PIN RS232 RS422 RS485
1 DCD TX- RTX-
2 RXD RX+ N/A
3 TXD TX+ RTX+
4 DTR RX- N/A
5 GND GND GND
6 DSR N/A N/A
7 RTS N/A N/A
8 CTS N/A N/A
9 PWR PWR PWR
PIN
Signal
Name
PIN
Signal
Name
PIN
Signal
Name
PIN
Signal
Name
PIN
Signal
Name
2 RRXD 4 DDTR# 6 DDSR# 8 CCTS# 10 NC
1 DDCD# 3 TTXD 5 GND 7 RRTS# 9 PWR
1

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