Supermicro SC826TQ-R800LPB Form Factor 2U chassis support for max. motherboard size – 13″ x 13.68″ E-ATX Hard Drive 12 x 3.5″ SAS / SATA Hot-swap drive traysSAS or enterprise SATA HDD only recommended Power Supply 800W (1 + 1) Redundant AC-DC high-efficiency power supply w/ PFC