Installed Lite on yesterday. Pulled my LG 8X4X32 and just used same jumper settings as before....CSEL (automatic selection). BIOS shows my DVD/CD player as master and the Lite on as slave. The DVD/CD is 12X/40X and am wondering if it makes a difference which one is slave or master. One person on another forum prefers making the faster reader the master. Does it really matter? If so, I will reset jumpers. I made only coasters or partially useable CDs with Fry's GQ brand 32X but 40X TDK worked great.