@TP-Link All Deco's are connected to the Main Deco via Ethernet cable to the Gigabit switch. Please see my Topology #2. When M4 is setup as a Main Deco, all ethernet clients negotiate at 1.0Gbps. It...

M5's won't operate greater than 100Mbps on wired clients. But wireless clients operates at ISP advertised speeds (500Mbps) Devices: SFP fibre modem TP-Link TL-SG1008D 8-port Gigabit Switch 1x Deco M5...