I have 3 Deco M9 nodes in AP mode. Node 1 (connected to my ISP modem/router by wire), Node 2 (wirelessly connected to Node 1), Node 3 (connected to Node 1 by ethernet backhaul). I have a desktop PC...

@Alexandre. Wut?! We keep learning. I'm glad it's working now. Apprantly TP-Link NL doesn't know what TP-Link international is up to and vice versa. But just a wild guess: maybe most of the ISP...

@Alexandre. Progress... - Powered off Node 2 and 3. - Connected Node 3 by ethernet to Node 1 and powered on: working Ethernet backhaul. - Powered on Node 2 again, and Node 2 is now connected with...

@Alexandre. I can confirm its in AP mode. I can transfer a 450Mb file in little over 7 seconds through the cable (desktop to wired laptop on same router). Fair enough for HDD to SSD I guess? Now...

@Alexandre. Thanks for the reply! It's starting to make sense to me now :). 1 thing that bugs me: - I have connected Node 3 with the available LAN cable (going directly to my router, as does Node 1)....

So I have installed 3 M9 plus nodes: Main on the first floor near my front door (due to ISP entry... Lousy spot I know), connected to my ISP's modem/router. Node 2 above that one on the 2nd floor...