Rack or Chassis
A chassis is the physical frame or structure of an automobile, an airplane, a desktop computer, or other multi-component device.
A Rack is the framework, typically with rails, bars, hooks, or pegs, for holding or storing things.
IC200UEX164 - GE Fanuc
VersaMax Micro 64 Point Expansion Module with 40 x Inputs (24 VDC), 24 x Relay Outputs and AC Power ..