SUPER MICRO COMPUTER, INC. CSE-213A-R740WB Supermicro SuperChassis 213A-R740WB - Rack-mountable - Black - 2U - 20 x Bay - 3 x 3.15in x Fan(s) Installed - 2 x 740 W - Power Supply Installed - ATX, EATX Motherboard Supported - 3 x External 5.25in Bay -