MS Networking Rack

Known by many names, a network rack is a metal frame chassis that holds, stacks, organizes, secures and protects various computer network and server hardware devices. The term "network" refers to the rack being used to house network hardware like routers, switches, access points, and modems.A standard increment used to express the height of a piece of rack-mounted computer or networking equipment, abbreviated as “U” and equal to 1.75 inches. For example, a server with a height of 4U takes up seven inches of vertical rack space.