DSM30 & DSM300 Transducer Adapter CableThe DSM30/DSM300 Transducer Adapter Cable allows you to utilize Raymarine's wide offering of specialty and high performance in-hull, through-hull or transom mount transducers with our new MFDs with built-in sounder. This adapter is also perfect for occaisions where a new sounder-equipped Raymarine MFD is replacing both an old display and DSM.Adapter cable adapts DSM30/DSM300 transducers to A series Transducers