@David-TP yes all the other wired clients on the switch are working fine. It's only the Deco nodes, when plugg3d into the switch using an Ethernet cable start to flash red. I need the Ethernet...

Just bought a new XE75 system and having trouble getting the ethernet backhaul working via a TP Link Unmanaged switch TL-SG1024D The nodes are all connected to the main unit that is also the Router....