Spacious Chassis: This enormous 4U server case has capacity for 12 internal 3.5’/2.5’ SATA I, II, III, and SAS supported devices. Expandable & E-ATX Compatible: 7 PCI expansion slots and E-ATX compatibility gives you growth options for all of your needs. Quiet Cooling: 5 pre-installed cooling fans provide excellent airflow and heat protection at reduced noise. 3 front 120mm fans and 2 rear 80mm fans ensure your drives and chassis avoid overheating. Desired Features: Front panel LED indicators for power, HDD, and LAN status monitoring allow quick, easy visual assessment. Additional utility with 1 USB 3.0 and 1 USB 2.0 port and built-in front panel lock provides extra security for your server case.