Key Features - 4x 3.5" internal SAS/SATA HDD Bays 90° rotatable HDD cage design, 4x 2.5" internal SAS/SATA HDD (opt.) - Peripheral Drive Bays: 2x 5.25" and 1x 3.5" - 1x 12cm Rear Exhaust Fan, 1x 12cm Front Cooling Fan (opt.) - 7x Full-height, Full-length PCI Expansion Slots - Front I/O ports: 2x Audio (HD/AC97), 2x USB 3.0, 2x USB 2.0, 2x 1394 ports - High Efficiency 80Plus Power Supply - Cost Effective Desktop, Embedded, Workstation Chassis