Yes, because my...

You need to enumerate serial ports first

perl enumerate serial-port
http://eli.thegreenplace.net/2009/07/31/listing-all-serial-ports-on-windows-with-python/
http://eli.thegreenplace.net/2006/02/13/once-again-perl-serial-ports-and-whats-between-them/

In reply to Re^3: finding a serial port with Win32::SerialPort by Anonymous Monk
in thread finding a serial port with Win32::SerialPort by pashanoid

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