For components that do not come with rails for rack- mounting installation, Dell offers the 1U fixed
equipment shelf that installs tool- lessly into square- hole or unthreaded round- hole racks using the
ReadyRails mounting interface. The rail design for the shelf also supports tooled installation in four-
post and two- post threaded- hole racks for added versatility. This steel shelf can hold up to 200
pounds of weight, and comes with a pair of hook- and- loop straps to secure cables to the shelf.
All form factors of the 42U racks share the same two- piece side panel kit, and all form factors of the
48U racks also share a two- piece side panel kit. The deep racks also have a third side panel placed
vertically over the rear extension.
Dell provides an interconnect kit, also called a baying kit or ganging kit, that connects any two
racks of the same height together. 4220 racks may also be connected to a 4210 rack using the kit.
Side panels must be removed to install the interconnect kit.
PowerEdge Rack Enclosures Technical Guide