The ST650 V2 can also be installed in the rack with the Rack Enablement Kit. The resulting server is a 4U rack-mountable server, as shown in the following figure. ThinkSystem ST650 V2 Tower to Rack Conversion Kit - ST650 V2 Tower to Rack Conversion Kit (EIA brackets, labels) - ST650 V2 Static Rail - ST650 V2 Rail Mylar (affix to rails to reduce friction)