If i had any idea what the model of Line 6 Floor Board this was I probably wouldnt have this problem or have to ask this question.   I'm getting a HD100 MKII head and wanted a floor board i could beat up at shows and not care about hurting.   Found one of these close to me for $10   and i just wanted to know if it would work.

It has the RJ-45 connecter in the back but I havent gotten my hands on my MKII yet to know what or where this will connect to.   Thanks everyone for the help, sorry to have to make a whole new thread for this... the search button here is terrible!