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Serial Port
The mainboard offers one 9-pin male DIN connector as the serial port. The port is a
16550A high speed communication port that sends/receives 16 bytes FIFOs. You can
attach a serial mouse or other serial devices directly to the connector.
1 2 3 4 5
6 7 8 9
9-Pin Male DIN Connector
USB Ports
The rear panel provides two UHCI (Universal Host Controller Interface) Universal
Serial Bus roots for attaching USB devices such as keyboard, mouse or other USB-
compatible devices. You can plug the USB device directly into the connector.
PIN
1
2
3
4
PIN
SIGNAL
1
DCD
2
SIN
3
SOUT
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
1
2
3
4
USB Port
USB Port Description
SIGNAL
DESCRIPTION
VCC
+5V
-Data 0
Negative Data Channel 0
+Data0
Positive Data Channel 0
GND
Ground
System Hardware
Pin Definition
DESCRIPTION
Data Carry Detect
Serial In or Receive Data
Serial Out or Transmit Data
Data Terminal Ready
Ground
Data Set Ready
Request T o Send
Clear To Send
Ring Indicate
2-7
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