So I just figured out the frustrating problem of "Why the f*ck is my USB keyboard not booting on start up!?" that I've been having, and learned that my speedpad (Belkin n52te (before it was bought by Razer, so not the Nostromo)) was causing confusion. I solved my problem by unplugging it, and voila! the keyboard was working pre-BIOS.
Is there a way to make either multiple USB devices detected, or perhaps ignoring one?
Perhaps it has something to do with where I have each one plugged in? I'll be testing this tomorrow, so I'll post back with results, though I'd like some insight on the above question.
My motherboard is an ASUS Rampage IV Formula with the latest (1404?) update.