9-Bay 937PK-BLACK MICRO ATX Steel Computer Case with 420-Watt Power Supply (Black) 9-Bay 937PK-BLACK mATX Steel Computer Case with 420W Power Supply General Features: Color: Black Case Material: Steel Motherboard Compatibility: Micro ATX Three (3) 5.25-inch external drive bays One (1) 3.5-inch external drive bay Five (5) 3.5-inch internal drive bays Four (4) punch-out expansion slots Includes 420W Power Supply # One (1) 20+4-pin power connector