ASRock IMB-186P [17/41] Com1 2 ports pin definition
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ASRock IMB-186P [17/41] Com1 2 ports pin definition

ASRock IMB-186 [17/41] Com1 2 ports pin definition
17
System Panel Header This header accommodates
(9-pin PANEL1)
several system front panel
(see p.8, No. 10)
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.
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 denition. In addition, COM1, 2 port (RS232/422/485) can be
adjusted in BIOS setup utility > Advanced Screen > Super IO Conguration. You may
refer to page 32 for details.
COM1, 2 Ports Pin Denition
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
GND
RESET#
PWRBTN#
PLED-
PLED+
GND
HDLED-
HDLED+
1
GND

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