I've recently acquired a PreSonus Firebox. As a mobile DJ one of many soundcard requirements was to be able to connect midi directly via device and skimp on wasting one USB port. For that to be done sucessfully, I needed a pinout of the firebox breakout cable that connects MIDI and SPDIF I/O.
On the begining of 2008. I have aquired an external soundcard for DJing off the laptop. But there were some problems that made me weep, beg, curse, make phonecalls and eat my shorts.