1. 400W Redundant power supplies.
2. 4x 3.5" Hot-swap SAS2 (6Gb/s) / SATA Drive Bays.
3. 1x Full-height AOC expansion slot.
4. 4x 40x28mm high-efficiency fans (2 more optional; 6x fans maximum).
5. 1x Slim DVD/CD-ROM Drive (opt.).
6. Front USB/COM access.
7. Applications: data center, appliance server, space critical application, industrial PC.