Not sure on the port either.
Glad you're getting your boards in. I'm ditching my efforts though on my 6-in-1 switcher MK machine and going to convert my dedicated MKII cab into MK Mame setup like Mike just built. Just makes more sense to me for the time being so I can have all the versions instead of only having 6 and having to swap roms for other versions.
Plus the MK Mame setup I'm gonna have is gonna have MK Gold, and MKT and MK4 for the PC running as well.
But I am keeping 1 of each of the MK boards and the 6 in 1 switcher in case I get a UMK3 cab later this year, then I'll put the 6 in 1 in that one. As of now I have MK 4.0, MK 5.0 Tunit with Turbo Ninja roms, MKII 2.1 (swap with Challenger roms), MKII 3.1, UMK3 1.1 (with Zeus Hack roms), UMK3 1.2 and MK4 3.0
Have MK 3.0 and 4.0 and UMK3 1.0 and 1.1 boards coming on a trade as well but gonna trade and sell these more than likely.
Btw - I got THE best deal on my MK4 3.0 board a few months ago, got it for $34.95 from a seller on ebay, who obviously didn't know what he had