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2. Determine the GPS-USB COM Port value
If you need to know your COM port value for your GPS
map software, please follow the steps below.
Click StartRun, type devmgmt.msc in the Open
box, and then click OK. The “Device Manager”
windows will open.
Click on the “+” sign next to “Ports (COM & LPT)”
to reveal the COM port value.
It should listed as the Prolific USB-to-Serial Comm
Port (COMxx)
3. Troubleshoot GPS Signal Activities
Q: My GPS system is not tracking any satellites
signal.
Ans: Perform this with a full charged PDA/laptop in an
open area with clear sky and away from high-power
electricity tower, microwave, tall building or any signal
interference devices.
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