Waypoint sharing between units, clarification

Waypoint sharing with LMS or LCX units: A NMEA 2000 network must be used to share waypoints between these units. Ethernet will not allow waypoint sharing, only HDS models can use Ethernet for waypoints. Waypoint sharing with these older models will not automatically transfer all of your waypoints from one unit to another unit. This must be done manually with a card. Waypoint sharing works "one at a time" as you first create the waypoint, it will then transfer that data to the other unit. Both units must be powered on for it to transfer. Wapoint sharing with HDS models: Ethernet will share waypoints as well as NMEA 2000. But with the Ethernet you will have advanced or enhanced waypoint sharing and editing which means the two units will auto synch with each other once connected and turned on. No manual tranfers needed. This is a great feature. You can edit a waypoint on one unit and the changes are made to the other(s) automatically once they are turned on. Other units do not have to be on during waypoint creation. Once connected it will synchronize the other units. Please note that the HDS5X model can be used to create and send a waypoint to other units in the network as long as it is networked to another unit which has GPS by using a NMEA2000 or 0183 network. Ethernet alone will not allow a 5X model to send waypoint information.