This Antec 3U cabinet is a robust and versatile chassis designed specifically for professional server environments and workstations. Made with an internal galvanized steel structure, it offers a wide compatibility with large motherboards (E-ATX and ATX) and extremely flexible storage management. The front design includes a perforated panel to maximize airflow, protected by a security lock to prevent unauthorized access to drive compartments and control buttons. The structure is complemented by reinforced handles for easy installation and removal from standard 19-inch racks. Specifications Shape Factor: Rackmount 3U (standard height for rack cabinets 19"). Motherboard compatibility: Extended support for E-ATX, ATX, Micro-ATX and Mini-ITX formats. Vani Drive Front: * 4 5.25" housings for HDD optical units or racks. 2 external 3.5" housings (ideal for card readers or floppy). Vani Drive Interior: 4 dedicated 3.5" hard disk housings in a fixed position. Cooling: Rear fan (included) for heat extraction and wide front grills for fresh air intake. Expansion Slots: 7 full height PCI slots (Full Height) on the back. Front panel I/O: * 2 USB ports 2.0/3.0. LED indicators for Power, HDD and Network activities. Protected Power and Reset buttons. Power supply: Standard housing for ATX power supply (not included).