Your on-board sound will connect to that speaker setup just fine. There are pictures of the mobo's back panel at Newegg.com
. Incidentally, I looked at the owner's manual
for that mobo and at the manufacturer's web page
, and they disagree about SPDIF. The web page says it has coaxial, but it does not. It's optical only. Also incidentally, nowhere at Logitech does it say or show how those speakers connect to anything.
I'll say it again, if they're going to let the marketing department run the whole show, fine, but they should at least talk to the people in the company who actually know what the product is.