Power device is specially designed to meet the power needs of your system. It is a hardware that supplies power to an electrical device. It receives power from an electrical outlet and supplies power to an electrical device.
Power Source provides the energy to run the device in full functionality
Product Type is the category to which the given product belongs and defines its basic purpose
Service and Support refers to the after-sale service provided by the manufacturer to its customer with regards to the products sold (e.g. Technical support, Phone support, Replacement of parts); subject to change; varies depending on manufacturer
It states the type of speaker like Floor-standing speakers, bookshelf speakers, and satellite/subwoofer speakers etc
It states the different type of components present in the device