Rosewill RSV-L4412U 4U Rackmount Server Chassis — 12x 3.5" HDD Bays

High-density 4U rack chassis built for storage: the Rosewill RSV-L4412U supports twelve internal 3.5"/2.5" drives and is compatible with SATA I, II, III and SAS devices. Expandability is handled with E-ATX compatibility plus 7 PCI expansion slots to accommodate add-on cards and future upgrades. Cooling is handled quietly by 5 pre-installed cooling fans — 3 front 120mm fans and 2 rear 80mm fans — to keep drives and components at safe temperatures with reduced noise. Front-panel conveniences include LED indicators for power, HDD, and LAN status, a built-in front panel lock for physical security, and both 1 USB 3.0 and 1 USB 2.0 port for easy connectivity. Ideal for server and storage deployments that rely on air circulation: Computer Cooling Type: air cooling.