Lowrance Ethernet Crossover Cable: * Rugged * High-speed * Moisture-resistant * Synchronize multiple sonar/GPS units * Works with Broadband Sounder-1, GlobalMap 5200C, GlobalMap 5300C iGPS, GlobalMap 7200C, GlobalMap 7300C HD, GlobalMap 8200C, GlobalMap 8300C HD, GlobalMap 9200C, GlobalMap 9300C HD, GlobalMap Baja 540C, GlobalMap Baja 840C, LCX-112C, LCX-113C HD, LCX-27C, LCX-28C HD, LCX-37C, LCX-38C HD, LMS-520C, LMS-522C iGPS, LMS-525C DF, LMS-527C DF iGPS and Navico Expansion Port-1