Avp atomic slim case 500w psu the avp atomic mini case is a slimline tower ideal for office use where space is a premium features slimline mini case 500w 12cm psu fitted black interior usb 20 hd audio specifications available color black dimension w d h 165 x 290 x 362 mm motherboard support matx itx 525 drive bay no 35 drive bay 2 internal 25 drive bay 1 internal io panel usb 20 x 2 hd audio amp mic fan bays front 120mm x 2optio