Chapter 2 Hardware Installation
Chapter 5
www.dfi.com
Chapter 5 Ports and Connectors
19
COM (Serial) Ports
COM 1 and COM 2 can be selected among RS232, RS422 and RS485 whereas COM 3 and COM
4 are fixed at RS232. Use the BIOS configuration utility to select the communication mode for
COM 1 and COM 2.
BIOS Setting
Configure the serial ports including the communication mode in the “Advanced” menu (Super
I/O submenu) of the BIOS. Refer to Chapter 7 for more information.
COM 1 (RS232/422/485) / COM 2 (RS232/422/485) / COM 3 (RS232 only)
RS232
RT
S
RI
DSR
CTS
6 7 8 9
DCD
TXD
RXD
DT
R
GND
1 2 3 4 5
RS422
Full Duplex
RX+
TX+
RX
-
TX
-
GND
1 2 3 4 5
6 7 8 9
N.C. N.C. N.C. N.C.
RS485
D
ATA
+
D
ATA
-
1 2 3 4 5
GND
N.C.
N.C.
N.C. N.C. N.C. N.C.
6 7 8 9
COM 4 (Serial) Port
This DB-9 serial port can be configured as an RS232 serial port or as an 8-bit DIO connector
via jumper settings. Refer to “COM4/DIO Select” in Chapter 4 for its respective configuration.
8-bit Digital IO/CANbus
The 8-bit Digital I/O connector provides monitoring and control functions to the connected
external devices. We have built support software called EAPI that enables the functionality of
hardware components. Please contact our tech support or sales representatives for the support
software package. In addition, you can configure this port to be CANbus compatible; please
refer to “Installing a CANbus card in the Mini PCIe slot”
in Chapter 3.
Pins
COM 4 Function
RS232
DIO
CANbus
1
DCD
DIO0
CAN1-L
2
RXD
DIO1
CAN1-H
3
TXD
DIO2
CAN2-L
4
DTR
DIO3
CAN2-H
5
GND
GND
GND
6
DSR
DIO4
J1708-L
7
RTS
DIO5
J1708-H
8
CTS
DIO6
N/C
9
RI
DIO7
N/C
DC-in
1
6
1
1
1
3
1
Mini
PCIe
/mS
ATA
1
12
12
1
Reset Power
Front
Panel
(JP11)
DDR4
DDR4
DDR4
DDR4
COM 4
(RS232/DIO/CAN bus)
LAN 2
LAN 1
USB 2
USB 1
USB 3.0
USB 4
USB 3
COM 3
(RS232)
COM 2
(RS232/422/485)
COM 1
(RS232/422/485)
VGA
USB 3.0
SPI Flash
BIOS
JP2
JP1
Battery
Mini
PCIe
MIC-in
LINE-out
HDMI
SATA Power
Realtek ALC888
Intel
WGI210AT
JP3
JP4
Auto PWR ON
(JP7)
1
SATA 3.0
LED 1
SATA_0
USB 2.0 7/8
1
2
10
1
2
1
2
COM 6 COM 5
COM 3: RS232
COM 4 (or 8-bit DIO): RS232
COM 2: RS232/RS422/RS485
COM 1: RS232/RS422/RS485
COM 5, COM 6: RS232