All that stuff will fit the opening at the back of the case, take my word for it. It only looks like there is no room. The connections are arranged more compactly than you realize. As others have said, the existing I/O plate on the back of your case has to be removed and replaced with one that comes with your motherboard. If you ever take a look at different ATX form factor motherboards, say at the newegg site, you'll notice a variety of configurations. Possibly few or none actually match your existing I/O plate, yet they will all fit the opening. Yours is no different in that respect.