Supermicro SuperChassis 836BE16-R920B - Rack-mountable - Black - 3U - 20 x Bay - 5 x 3.15" x Fan(s) Installed - 2 x 920 W - Power Supply Installed - EATX, ATX Motherboard Supported - 5 x Fan(s) Supported - 1 x External 5.25" Bay - 17 x External 3.5" Bay - 2 x External 2.5" Bay - 7x Slot(s) - 2 x USB(s)