Charge USB devices from your GPSMAP 8400 or 8600 series chartplotter with this 6-foot adapter cable. The waterproof and secure connection lets you power an external device via USB, such as a cell phone or media player, from your Garmin chartplotter. You can also power your Chromecast or Roku—with a coupler and HDMI cable (sold separately—and then stream music wirelessly to your chartplotter.
