Brand New.Garmin OEM 6ft Marine Ethernet Network Cable RJ45 010-10550-00  This marine network cables offer an additional 6 feet (1.83 m), 20 feet (6.1 m), 40 feet (12.19 m) or 500 feet (152.4 m) of cable length (each sold separately). These network cables are compatible with select Garmin devices. The marine cables 010-10550-00 give you an extra 6 feet of cable for hooking up your Garmin device.