- 1. 920W Redundant High-efficiency Platinum Level (94%+) Power Supply- 2. 12x 3.5" Hot-swap SAS / SATA Drive Bays and optional 2x 2.5" Hot-swap SAS/SATA Drive Bays- on rear side of Chassis- 3. 3x 80mm Hot-swap Cooling Fans- 4. WIO Slots (4x Full-height, Full-length + 3x Low-profile Expansion slots)- 5. SAS/SATA 6Gb/s HDD backplane with SESII- 6. Mini-i-pass (SFF 8087) connectivity (multi lane)