Digital I/O Connector; Com (Serial) Ports - DFI MB336-NRM User Manual

Digital I/O Connector

The 8-bit Digital I/O connector provides powering-on function to external devices that are
connected to these connectors. The pin functions of the 8-bit digital I/O connector are listed
below.
Digital I/O Connector
Pins Pin Assignment
1 GND
3
DIO7
DIO6
5
DIO5
7
DIO4
9
DIO3
11
DIO2
13
DIO1
15
DIO0
17
GND
19
Chapter 2 Hardware Installation
Chapter 2
Digital I/O
19
2 1
Pins Pin Assignment
+12V
2
+12V
4
GND
6
+5V
8
+5V
10
GND
12
+5V_Standby
14
+5V_Standby
16
GND
18

COM (Serial) Ports

DCD-
GND
RTS-
COM 1 COM 3
COM 2 COM 4
9 1
2
COM 1 to COM 4:
RS232
COM 1 to COM 5 are fixed at RS232.
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.
Connecting External Serial Ports
Your COM port may come mounted on a card-edge bracket. Install the card-edge bracket to
an available slot at the rear of the system chassis then insert the serial port cable to the COM
connector. Make sure the colored stripe on the ribbon cable is aligned with pin 1 of the COM
connector.
BIOS Setting
Configure the serial COM ports in the Advanced menu ("F71879 Super IO Configuration" and
"F71879 Second Super IO Configuration" submenu) of the BIOS. Refer to the chapter 3 for
more information.
22
1 2
RD
TD
DTR-
COM 5: RS232
DSR-
CTS-
RI-
9
COM 5