Hello everyone, A while back i purchased a Yamaha Motif XF6 (A synth Workstation), and i connected this device to my P6T Motherboard Firewire slot. 6 pin <-> 6 pin. Also, my KRK's are connected to the back of the Motif XF6. Everything works fine UNTIL i plug in the Firewire connector from the PC to the Motif to Record. It starts to make a very high Frequency Whisle/Noise/Beep. Its not VERY loud, but it gets VERY annoying after a few minutes. Here's some things i tried to fix this problem: -Plugged the AC Plugs in other boxes -Played around with the cables to see if the signal got better (no) -Got a PCI Firewire card, didn't work. -Got a better isolating Firewire cable - Didn't work. I THINK it has to do with the fact there's already a AC plug running to the Motif, and with the 6-pin FW plug (which also delivers some electricity) they kinda crash into eachother somehow. ... I hope you clearly understand my problem, else ill be happy to clearify some things. Thanks in advance Everyone!! Robert.