WHAT IS THE USB PORTS FOR ON THE FRONT OF THE AIRCRAFT? AND ON THE SIDE OF THE GIMBLE?

All of that can be found in the user guide and firmware update guide, because you didn't say which Phantom 3 you have I couldn't give you page numbers. look it up, you'll be surprised
at how much info DGI gives us.
They have several uses that why I pointed to the manual.
Happy Flying & Soft Landings

You could try reading the manual https://dl.djicdn.com/downloads/ ... 1.8_en_20160719.pdf
Page 16 and 31.

One accesses the aircraft flight data recorder and the other accesses the camera recordings.

Endotherm hit the nail on the head.

endotherm Posted at 2016-12-28 21:20
You could try reading the manual https://dl.djicdn.com/downloads/phantom_3/en/Phantom+3+Professional+User+Manual+v1.8_en_20160719.pdf
Page 16 and 31.

Sorry I didn't know a little question would bring the smart people out? I did read the manual as soon as I received it! sorry I didn't remember every little detail!! I WILL CHECK THE MANUAL BEFORE ASKING ANY QUESTIONS AGAIN!!!  

Stinky711 Posted at 2016-12-28 20:26
All of that can be found in the user guide and firmware update guide, because you didn't say which Phantom 3 you have I couldn't give you page numbers. look it up, you'll be surprised
at how much info DGI gives us.
They have several uses that why I pointed to the manual.

Sorry its the Advanced. But I know the answer now. thanks