Form Factor 4U chassis support for max. motherboard size - 12' x 13' E-ATX Processor Support Supports dual, single Intel® / AMD processors Dimensions Width 178mm Height 452mm Depth 648mm Gross Weight 56 lbs (25.4kg) Expansion Slots 7x Full-height, Full-length PCI expansion slots Drive Bays Hot-swap 8x 3.5' SAS / SATA Hot-swap Drive Bays SAS or enterprise SATA HDD only recommended Peripheral Bay(s) 2x 5.25' Peripheral Drive Bay 1x 5.25' Bay For 3.5' Device Drive Bays are 90° Rotatable SAS / SATA Backplane SAS / SATA Hard Drive Backplane w/AMI MG9072 Front Panel Buttons Power On/Off button System Reset button LEDs Power LED Hard drive activity LED 2x Network activity LEDs System Overheat LED Power Fail LED Ports 2x USB Ports Power Supply 865W AC power supply (cooling-redundant) w/ PFC