CSE-835TQ-R920B Super Chassis; 920W Redundant High-efficiency; 80PLUS Platinum Level (94%+) Power Supply; 8x 3.5" Hot-swap SAS / SATA & 2x 5.25" Drive Bays; 1x Slim DVD-ROM Drive (optional); 7x Full-height, Full-length Expansion Slots; 100% Cooling Redundancy; Adjustable Air Shroud