Using an MSI Z97 Gaming 7 and a Logitech Z906 speaker system. Logitech decided not to label the 6 channel ports. They used green, peach and black as the colours but didn't say which does what. The ports on the motherboard are all black and labelled, but without the Logitech end being labelled that's not helpful. Sound is going to the wrong speakers and I can't get front left and right to work.