JJ Sinclair wrote:
If you inadvertently put a 4-pin plug into a 6-pin hole, you will bend
the outside pins in the 6-pin hole and it wont send NMEA to your
computer. Guess how I know this to be true?
JJ

Read about it on the intertubes?

It's not a real bad electrical mistake unless you can't use the electronics anymore afterwards.

Sarah