ASRock SBC-211P [18/37] Com port headers

COM Port Headers

(10-pin COM1)

(see p.8 No. 23)

(10-pin COM2)

(see p.8 No. 21)

(10-pin COM3)

(see p.8 No. 19)

(10-pin COM4)

(see p.8 No. 17)

Signal

Name

Signal

Name

Signal

Name

Signal

Name

Signal

Name

10 DUMMY 8 CCTS# 6 DDSR# 4 DDTR# 2 RRXD

9 DUMMY 7 RRTS# 5 GND 3 TTXD 1 DDCD#

SATA Power Output Connector

(4-pin SATA_PWR1)

(see p.8 No. 12)

+ 5 V

+ 1 2V

GN D

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 NA/+5V/+12V N/A N/A

This motherboard supports RS232/422/485 on COM1 port. Please refer to below

table for the pin denition. In addition, COM1 port (RS232/422/485) can be adjusted

in BIOS setup utility > Advanced Screen > Super IO Conguration. You may refer to

page 29 for details.

COM1 Port Pin Denition