Biostar M7VKQ M7VKQ user's manual - Page 32
Signal, DB9 PIN, Data Carrier Detect, Receive Data, Transmit Data, Data Terminal Ready, Signal Ground
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Chapter 1 Motherboard Description Connectivity The serial port can be used in many ways, and it may be necessary to become familiar with the pinout 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 DCD RX TX DTR GND DSR RTS CTS RI Name Data Carrier Detect Receive Data Transmit Data Data Terminal Ready Signal Ground Data Set Ready Request to Send Clear to Send Ring Indicator DB9 PIN 1 2 3 4 5 6 7 8 9 DB25 PIN 8 3 2 20 7 6 4 5 22 1-27
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Chapter 1
Motherboard Description
1-27
Connectivity
The serial port can be used in many ways, and it may be necessary to become
familiar with the pinout 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