I'll probably have quite a few leftover boards, due to the lack of keys. I can send you any cables I have leftover for the 122 key boards. The 101's, on the other hand, I have a shortage of cables for. Many of the cords of the late-model boards are frayed. Which says something about the build quality of those boards (none of the old-model boards have frayed cables). They may actually be good candidates for USB mods, since the pins on the controller are probably intact on all of them.
I should say that I can't test any of the 122 key Model M's, but I'm rather sure they all work fine. I have yet to find a single Model M in this stash which are electrically faulty; the only non-functional boards are the ones with mechanical problems (missing springs, crushed cases and the like). If I have learned anything from these, it is that Model M's are ****ing tough as hell.