Internal I/O Connectors; Dc-In; Com (Serial) Port - DFI GH551 User Manual

X Internal I/O Connectors
12V DC-In
4 3
2 1
Pin Assignment
1 GND
2 GND
3 +12V
4 +12V
Connect a 4-pin DC power cord to the power connector for DC supply. The coaxial and 4-pin
vertical types are avaible upon request.
Jumper Setting
The power related configurations are configured via jumper settings as previously instructed in
this chapter.
4-pin right angle (default)
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 | GH551
10 9
1
2 1
1
1
1
1
1
2 6
1 5
2 6
1 5
1
39 40
1 2
10
2 1
5
2 1
9 1 1 9 1
1
1
1
10 2 2
4-pin vertical (optional)
DC In coaxial (optional)

Internal I/O Connectors

X

COM (Serial) Port

Pin RS232 RS422
1 DCD- TXD-
2 RD TXD+
3 TD RXD+
4 DTR- RXD-
5 GND GND
6 DSR- N.C.
7 RTS- N.C.
8 CTS- N.C.
9 1
9 RI- 1 N.C.
1
10 2
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 1 supports three serial modes, i.e. RS232, RS422, and RS485.
BIOS Setting
Configure the onboard COM ports in the Advanced menu ("Console Redirection" and
"NCT5525D Super IO Configuration" submenus) of the BIOS. Refer to chapter 3 for more infor-
mation.
HARDWARE INSTALLATION
RS485
1
Data-
Data+
N.C.
N.C.
GND
N.C.
1 9
9 1
1
1 1
10 2
N.C.
N.C.
1
9 1
N.C.
1
2
„ COM1
1 5
Chapter 2
1
39 40
10 9
2 1
1
1
1
1
1
2 6
1 5
2 6
1 5
1
1 2
39 40
10
1 2
10
2 1
5
2 1
1
2 1
2
5
2 1
16