Each device component has some number of required (frozen) slots and properties, which will vary by driver. However, the following categories of components and slots are typical to most device-level components:

Also, a device component has one or more device extensions, which are visible when you expand the device in the Nav tree. For more details, see Types of device extensions.

A few drivers implement “virtual components,” which typically adds a frozen “Virtual” gateway slot under the device component. See Virtual gateway and components.