How to know the port number and speed of your navigator?

A: This is a question that many people are puzzled about. There are several ways to get the answer:

1. Use tool software for scanning test, such as GPSviewer, but many navigators can't get the correct port number even using these software. However, I recently tried a small software called Navi examine, and it feels good. I recommend it to everyone. This software can be found in this forum. Please see the link below.

2. Test one by one. This is the most stupid but effective method. The rate is generally 4800, and other rates are few. You can also try 9600. Port numbers are tested one by one from COM0-COM 12, but most navigators are COM 1 or COM2.

3. Check the port and rate configuration of the current navigation software. This is the fastest and most effective method.

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