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  1.    #1  
    I am using Treo 300 and installed programs to use serial port on Treo 300. The main purpose for this is to connect GPS receiver with serial port to get positions.

    Most of all programs I've installed had an error saying like "Failed to Open serial port 0" and so I cannot use the serial port.

    I had no experience as this with other palm organizer.

    Is there anybody who experienced the same thing?
    Do you have any idea why is this happen?
  2. #2  
    Sounds like a cable issue.
  3. #3  
    Did you get the serial port to work? What did yo do?
  4. #4  
    The serial port on Handspring PDA's gets its power from the computer it is attached to. GPS devices usually do also. Unless you construct a cable that can power the ports, it won't work.

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