Where can I find a cable that runs from the serial port of my QS7 synth to the MIDI port of my computer? The cable that came with my keyboard is for Macs only. My local music store told me I need a special adapter and to run 2 MIDI cables but I think they're pulling my leg. Oh yeah, I thought Alesis went bankrupt and was bought out by Newmark. So why are there new versions of the QS series of keyboards in MF?