Reply to Midi Fighter Mods (xtra connections)

Hey!

I just got a Midi Fighter and I'm about to do some mods. I saw in the video for the original that it has the 4 analogue and 4 digital connections on the side, but looking closer at the board I noticed an additional 6 connections to the right of the center (or left of center if you're looking at the bottom, next to where the timeclock-sync LED would connect). What are those connections for? I am assuming the square one is the ground based on the other ground connection.

Aside from that, the Midi Fighter is awesome and I'm building it into a super Serato Controller with 1 additional row of 4 arcade buttons and 3 analogue knobs up top. I'll keep you posted on the development, but I'm interested in what those other 6 connections do in case I can build something else onto this thing.

Thanks!!