Greetings! I have ordered this product long time ago without considering plugging my SNES in it. My PS2 and PS1 work like a charm, but when I plug in my SNES it doesn't budge. I use the SNES to Composite cable to plug Video and Audio cables in the Marmitek but nothing works. I plug the same cable to a TV and it works like a charm. Do you guys have any tips about this?