#PC_board  a removable circuit board for a personal computer; fits into a slot in the mother board
  supertype:  #circuit_board__circuitboard__circuit_card__circuitcard__board__card  a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities
  part of:  #personal_computer__PC__microcomputer  a small digital computer based on a microprocessor and designed to be used by one person at a time

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