- 32 -
Installation
- 32 -
COM2~4: Serial Port Connectors
This industrial motherboard features 3 serial
port connectors in RJ-45 jack. Users can use
these ports to connect to serial devices such as
network modem with RJ-45-to-COM type of
cable connectors.
Connector type: RJ-45 jack
Pin
COM2
COM3
COM4
1
*DSR# / RI# *DSR# / TX+ *DSR# / TX+
2
DCD#
*DCD# / TX- *DCD# / TX-
3
DTR#
DTR#
DTR#
4
GND
GND
GND
5
RXD
RXD
RXD
6
TXD
TXD
TXD
7
CTS#
*CTS# / RX+ *CTS# / RX+
8
RTS
*RTS# / RX-
*RTS# / RX-
1
COM2
COM3
COM4
8
1
8
1
8
* -
About Selecting the Pin Signals
For details about selecting the pin signals, please refer to the J6, J2, J3, J4,
and J5 jumpers under the Jumper Setting section of this manual (P.9, P.10
and P.11).
Attention:
When changing the signals of Pin 1/2/7/8 for COM3 or COM4, remember to
change the operating mode (RS-422/485) first by using the jumpers JRS3~4
and JTM3 (please refer to the “JRS3~4” on P.9 and the “JTM3” on P.12 under
the Jumper Setting section).
Summary of Contents for ITX-i2705
Page 7: ... iii This page is intentionally left blank Index ...
Page 8: ... 1 Introduction 1 1 Chapter 1 Introduction Chapter 1 Introduction ...
Page 12: ... 5 Installation 5 2 Chapter 2 Installation Chapter 2 Installation ...
Page 44: ... 37 BIOS 37 3 Chapter 3 BIOS Chapter 3 BIOS ...
Page 73: ... 66 Appendix 66 Appendix Appendix ...
Page 84: ... 77 Appendix 77 This page is intentionally left blank ...