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COM2: The Second Serial Port
COM2 is a pin header for second serial port.
Floppy Disk Drive Connector: FDD
The floppy disk drive connector supports 360K, 720K, 1.2M. 1.44M, and
2.88M floppy disk types.
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
CLE266
COM2
2
1
9
CLE266