I bought this knowing I had sata HDD's installed and thought that I could use one of the sata connectors to hook it up but now I am unsure. Looking over my MB manual all it states is that u can hook up HDD's, it states serial ATA 2 connectors of which I have 3 open. Can I use these or do I need to exchange it for an IDE dvd drive? MB is a XFX 780i 3-way SLI.