Chapter1
Motherboard Description
1-25
Connectivity
The serial port can be used many ways, and it may be necessary to become
familiar with the pin-out diagram. The following chart gives you the function of
each pin on the 9-pin connector and some of the 25-pin connector. This
information can be used when configuring certain software programs to work with
the serial port.
Signal
Name
DB9 PIN
DB25 PIN
DCD Data
Carrier
Detect 1
8
RX Receive
Data 2 3
TX Transmit
Data 3 2
DTR Data
Terminal
Ready
4
20
GND Signal
Ground 5 7
DSR Data
Set
Ready 6 6
RTS
Request to Send
7
4
CTS Clear
to
Send 8 5
RI Ring
Indicator
9 22
Summary of Contents for M6TSU
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