I'll have to dig through my inventory room.  Recently stocked up massively on packing supplies due to ramping up USB sales, and also preparation for next gen (I really hope I'm not waiting til February for that).  I want to say there were 2 backplanes leftover, but when I was paying some friends to help clean up the place to provide *some* order to all the boxes, envelopes, packing materials, etc., I think that box got shifted somewhere not readily available.