I have yet to purchase an IMac, but seriously considering it should it get the Thunderbolt "port" in a new revision update if ever... However, I had a question. I currently have a Logitech Z680 5.1 Surround Sound system hooked up to my windows based desktop. I've attached a photo of the back of the "dock" or "control pod" of the system. Would I be able to use the digital optical port with the IMac with no issues? Ie I would not have to get any other devices to have the system work? Any other IMac users with surround sound systems hooked up that they would suggest?