Cable Solutions GPS to Pocket PC: "To connect an existing GPS to a Pocket PC requires a cable to fit to the GPS and another to fit to the Pocket PC. These should both terminate in a 9 pin serial port connection and are available from your GPS and Pocket PC suppliers.

Connecting them together requires a Null Model Adaptor.

Alternatively, select from the modified cables below that include that Null Modem modifications, this reduces the connections and shortens the length of accumulated cables."