Supermicro SuperChassis SC216BA-R920WB System Cabinet - Rack-mountable - Black - 2U - 24 x Bay - 3 x Fan(s) Installed - 2 x 920 W - EATX, ATX Motherboard Supported - 3 x Fan(s) Supported - 24 x External 2.5" Bay - 7x Slot(s)