NZXT Duet SECC Steel/Aluminum HTPC Mid Tower Desktop Computer Case (Black) Fits Full-sized ATX Motherboard and Power Supply Dual positioning, vertical or horizonal depending on home setup Supports all Video cards less than 8" in length One internal 3.5 drive and dual 120mm setup or Three internal 3.5 drives and no 120mm fans Duel use vents for cooling or expandibility, install either dual 120mm fan capability or dual hard drives