Antec Mid Tower 4 Bay Silver 430W ATX 12V Quite Computer Case Package Includes - Tower Case, NeoHE 430 installed, set of screws and motherboard standoffs, Installation manual, Power Supply 430 Watt, ATX12V 2.2 8 Drive Bays - 3x 5.25 inch, 1x 3.5 inch Front Accessible, 4x 3.5 inch or 3x 3.5 inch with HDD suspension Internal 7 Expansion Slots Motherboards - Standard ATX Main Board Size - Width 12 x Length 9.6 inches