Legacy Open Mesh: What do the lights on the MR500 mean?

The left most light that appears to be "two arrows" is the only "useful" light for determining how the MR500 unit is functioning.

* blue solid once the WiFi is up
* blue blink if internet access works (either as gateway or repeater speed
above 1 Mbps)

The other lights indicate power (standard ethernet link lights) and only indicate that the other end of the ethernet is active, and is passing data.