I recently purchased the be75 and have them connected via lan wired backhaul, and have had nothing but problems with the non-main deco. 6ghz network with no Internet, erratic wifi signal and connection fluttering up and down. After removing the wired backhaul the devices operated as good as it can with the distance apart with all 3 frequencies working. I would prefer to have the wire because these 2 decos are on different floors. Hope there is a firmware update to fix this. I would have returned if I didn't miss my window of opportunity.