Charge USB devices from your GPSMAP® 8400 or 8600 series chartplotter with this 6-foot adapter cable. The waterproof and secure connection allows you to power an external device via USB, such as a 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 video wirelessly to your chartplotter.
