#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
  supertype:  printed_circuit__printedcircuit  computer circuit consisting of an electronic sub-assembly; copper conductors are laminated on an insulating board or card and circuit components are inserted into holes and dip soldered
  subtype:  CPU_board__mother_board  the main circuit board for a computer
  subtype:  PC_board  a removable circuit board for a personal computer; fits into a slot in the mother board

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