Internal I/O Connectors; Dc-In; Com (Serial) Port - DFI CS551-C246 User Manual

X Internal I/O Connectors
12V DC-In
LED1
LAN1
1
1
Heater and Switch
Connect a 4-pin DC power cord to the power connector for DC supply. The coaxial type is
avaible upon request.
CPU Fan
1
Important:
Using a voltage higher than the recommended range may result in failure in start-
ing and booting the system or causing irreversible damage to the system board.
A power adaptor/converter is necessary when the power source on site does not
comply with the power specifications of the board.
User's Manual | CS551
LED1
USB 3/4 (left), 1/2 (right)
1
(USB 3.1 )
Note
1
Heater and Switch
LAN2
1
LVDS
2
9
USB 5/6 (USB 2.0)
10
SPI Flash BIOS
CPU Fan
1 DIO
4-pin vertical
DC In coaxial (optional)
DDR4_1 SODIMM
USB 3/4 (left), 1/2 (right)

Internal I/O Connectors

X
(USB 3.1

COM (Serial) Port

LAN1 LAN2
USB 5/6 (USB 2.0)
DP++1/2
10
Front
Audio
39
2
6
40
1 9
2
1 COM1
6
2 10 2
2
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
Buzzer
can be used with modems, serial printers, remote display terminals, and other serial devices.
10 9
COM 1 supports three serial modes, i.e. RS232, RS422, and RS485.
JP1
2 1
1
„ COM Port Pin Assignment
Pin RS232
1
1 DCD-
M.2
DDR4_1 SODIMM
M Key
2 RD
3 TD
4 DTR-
5 GND
5 1
Mini PCIe
6 DSR-
2
7 RTS-
SMBus
8 CTS-
9 RI-
HARDWARE INSTALLATION
)
Note
DP++1/2
1
39
LVDS
2 40
9 1 9
1 COM1
10 2 10 2
9
SPI Flash BIOS
1
10 9
5 DIO
JP3
1
2 1
5
JP5
1
LVDS
M.2
Backlight
M Key
Power
1
RS422 RS485
SATA 3.0
TXD- Data-
5 1 Mini PCIe
TXD+ Data+
SATA 2
Power
RXD+ N.C.
1
SMBus
JP2
1 RXD- N.C.
1
Battery
GND GND
N.C. N.C.
N.C. N.C.
N.C. N.C.
N.C. N.C.
Chapter 2
10 9
Front
Audio
2 1
6 5
2 1
6 5
2 1
Buzzer
JP1
1
1
1
1
1
1
19