Chapter 2
2-16
The mainboard offers two 9-pin male DIN connectors as serial ports.
The ports are 16550A high speed communication ports that send/receive
16 bytes FIFOs. You can attach a serial mouse or other serial devices
directly to the connectors.
Serial Ports
PIN SIGNAL
DESCRIPTION
1 DCD
Data Carry Detect
2 SIN
Serial In or Receive Data
3 SOUT
Serial Out or Transmit Data
4 DTR
Data Terminal Ready
5 GND
Ground
6 DSR
Data Set Ready
7 RTS
Request To Send
8 CTS
Clear To Send
9 RI
Ring Indicate
Serial Port Pin Definition
9-Pin Male DIN Connector
1 2 3 4 5
6 7 8 9
IEEE 1394 Port (For Standard Version)
The back panel provides one standard IEEE 1394 port. The standard IEEE
1394 port connects to IEEE 1394 devices without external power. The
IEEE 1394 high-speed serial bus complements USB by providing en-
hanced PC connectivity for a wide range of devices, including consumer
electronics audio/video (A/V) appliances, storage peripherals, other PCs,
and portable devices.
1394 Port
