extension

I've been wondering this. Does using extension cables add any strain to the controller board in terms of power? As most of us know the controller board is really easy to blow the fuse If I used two extension cables for 3 inputs am I guaranteeing a blown fuse? It's not too hard to fix it. But...

Anyone seen one of these around, know if they even exist? The standard USB cable is really short, awkward to play whilst plugged into mains. Would like to get some sort of USB extension cable, however because its sort of proprietary both ends of the cable (the USB end has notches that prevent...