search phrases such as M12 connector manufacturer and M12 connector supplier describe a source, not a guaranteed product interface. A manufacturer may build M12 circular connectors, board-to-board connectors, high-current battery connectors, and custom cable assemblies in the same factory. A supplier may stock several families. A domain such as m12-connectors. com can be a brand doorway for a broad catalog. The label tells a reader where to look; it does not tell what every item in the catalog is. A site branded Ximeconn M12 Connectors can carry a 32-pin board-to-board waterproof connector in the same catalog without changing that part’s mating category. The mistake is treating a site name as a product-level fact. Search results are also built from page titles, category names, and snippets. A result can lead to a company homepage that mentions M12 circular connectors in its business scope while the product detail underneath is a PCBA connector with two board-mounted halves. New readers should read the product noun first: board-to-board, PCB header, receptacle, cable plug, panel mount, circular, or cordset. Then look at the mating face. A round front with a locking collar and a cable entry points to a cable-level circular interface. A rectangular or custom multi-pin block with solder tails and board hold-downs points to a board-level interface. The placement in the assembly usually settles the question: between two PCBs, it is board-to-board; at the end of a cable and on a housing, it is cable-level. That reading method works even when the manufacturer’s page covers many connector families.