- 500W Redundant Power Supplies 80 PLUS, Platinum Level Certified- 16x 3.5" Hot-swap Drive Bays- 2x Internal fixed 2.5" HDDs (optional)- 1x Slim DVD-ROM Drive (optional)- 7x FHFL PCI Expansion slots- 100% Cooling Redundancy- Adjustable Air Shroud- Power Switch and 6 LED Indicators- SAS/SATA 6Gb/s HDD backplane with SESII