Case Type: MicroATX SFF Slim M/B Type: MicroATX, Mini-ITX External Bay: 1x 5.25", 1x 3.5" Internal Bay: 1x 3.5", 1x 2.5" Expansion Slots: 4x Low Profile Slots Cooling System: 1x 90mm Front Fan Front I/O Panel: 2x USB 3.0 Ports, 2x USB 2.0 Ports, HD Audio Power Supply: 300W Standard TFX 12V Power Supply (Support Haswell) Innovative thermal design without ventilation holes on the top, bottom or side panels. Placement in both Vertical or Horizontal stance. Vacuum effect with a built-in 90mm front fan for quick heat dissipation. Equipped with two USB 2.0 and two USB 3.0 ports for multiple USB device connections. Tool-free design for ODD, HDD, fan bracket and PCI slots. One touch release for fast system assembly or maintenance.