Not trying to hijack the thread, but I have a question.
If I were to get a trackball like the refurb mentioned in this thread, or any 3" for that matter, could that be hooked directly to an OptiPac? I plan on having a TB and a spinner on my CP, so would I be best off just getting an OptiPac and hooking both up to that? *if that's possible*
And also, does the OptiPac have contacts for 2 mouse buttons?