This is a MacView cable adapter designed to connect a vintage Macintosh computer to a Sony monitor.Switch Settings: The adapter features 10 or more DIP switches on the device, as shown in the instruction diagram, which are used to configure the desired display resolution.Resolution Support: It supports various monitor resolutions, ranging from 640x480 up to 1152x870.Compatibility: This specific model is designed for a DB-15 male connector on the computer side and a HD-15 female connector on the monitor side.