Antec LifeStyle Solo ATX Quiet ATX Mini-Tower Case (Piano Black) 8 drive bays: four external 5.25", four internal 3.5" Accommodates any ATX12V or ATX12V v2.0 form factor power supply Tray mount or suspension mount for best possible quiet operation Dual-layer sound deadening panels and a suspension system makes hard drive noise a thing of the past Fits Micro ATX (9.6-by-9.6-inch) and Standard ATX (12-by-9.6-inch) motherboards