I have an FC40 and I just bought and installed the DJI upgrade board, P330-CB-H3-2D V3, since I'm planning on adding a gimbal in the future. I noticed that my upgrade board has a 4-pin port on it, is this a CAN bus?While other pictures I had seen online do not have it,. It looks like I have the V3 version of the board,All the pictures I saw online are of the V1 board. Is this a CAN port on the V3 board? If I buy this:http://www.ebay.com/itm/221440725224?_trksid=p2059210.m2749.l2649&ssPageName=STRK:MEBIDX:IT, will I be able to just attach it and I will have a CAN port on my FC40?