ATX and Micro-ATX, 1-4 X 5.25" Drives, 2-7X 3.5" Drives, 4-7 slots, 2 Front USB, Ideal for P3, P4 Conroe 2 & AMD System, 0.6mm SECC high-quality material, folded edge for easy installation and maintenance, Speaker & microphone jack in front panel, 8cm optional system fan in rear panel, g.w.=7kgs.