Everyone needs one of these. This is an extremely dense card. It is a 6U CPCI Front card that employs high speed ethernet, daisy chained busses, highspeed busses, 4 local switching supplies, and has full In-circuit test capabilities. This is a 16 layer card that HAD to be .062 thick and it had to have controlled impedance. Special materials were required to manufacture this card. Caution...these are pretty large files!