(subclass ComputerPort EngineeringComponent) | ComputingBrands.kif 2554-2554 | Port is a subclass of engineering component |
(subclass USBPort ComputerPort) | ComputingBrands.kif 2870-2870 | USB port is a subclass of port |
(subclass AppleDockPort ComputerPort) | ComputingBrands.kif 2881-2881 | DockPort is a subclass of port |