#module  a self-contained component (unit or item) that is used in combination with other components
  supertype:  component__constituent  an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system: "spare components for cars"; "a component or constituent element of a system"
  part of:  system.instrumentality
  subtype:  cartridge.module  a module designed to be inserted into a larger piece of equipment; "he loaded a cartridge of fresh tape into the tape deck"
     subtype:  ink_cartridge__inkcartridge  a cartridge that contains ink and can be replaced
     subtype:  tape_cartridge  a cartridge containing magnetic tape; for use with audio or video recorders or computer systems
  subtype:  power_module__powermodule  module that provides power to operate other modules

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