Internal I/O Connectors; Com (Serial) Port - DFI CS350-C246 User Manual

X Internal I/O Connectors

COM (Serial) Port

DDR4_3
1
1
CPU FAN1
„ COM 2/3/4 from top to bottom
2 6
JP8
1 5
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
can be used with modems, serial printers, remote display terminals, and other serial devices.
COM 2 supports three serial modes, i.e. RS232, RS422, and RS485 as well as RS232 with/
without power. COM 3/4 only support RS232.
Jumper Setting
Serial mode and RS232 with/without power of COM 2 are configured via jumper settings as
previously instructed in this chapter.
User's Manual | CS350
DDR4_1
DDR4_4
6 2 6
2
1 5 1 5
JP10 JP7
1
14 13
COM2
9
2 1
1
COM3
LPC
9
1
COM4
9
12
ATX
power
Standby
Power
LED
1
1
Front
Panel
11
LAN LED
1
7
SPI Flash BIOS
DDR4_2
Pin
2
1
2
2
3
4
2
5
6
7
24
8
9
13
2
2
8
HARDWARE INSTALLATION
„ COM Port Pin Assignment
Standard RS232 with RS422
RS232 Power (COM 2) (COM 2)
DCD- +12V TXD-
SIN SIN TXD+
SO SO RXD+
DTR- DTR- RXD-
GND GND GND
DSR- DSR- N.C.
RTS- RTS- N.C.
CTS- CTS- N.C.
RI- +5V N.C.
Chapter 2
RS485
(COM 2)
Data-
Data+
N.C.
N.C.
GND
N.C.
N.C.
N.C.
N.C.
22