@Cro_goco Deco X55 has gigabit Ethernet ports. Deco X50 Pro has 2.5 gigabit Ethernet ports. There are Deco models with 10 gigabit Ethernet ports. I can't help much with 100Mbps link speed, but even...

@Chesterfield Yes, this will work.

@MatteoV Check Deco X50-PoE.

@Howell10 When you get speed around 100Mbps from Deco mesh, that usually points at Main Deco connecting at 100Mbps instead of gigabit to ISP Router. You said you tried different cables, but it is...

@Howell10 To run Deco in Access Point mode, you will need ISP modem/router running in router mode (usually, default mode). Connect Main Deco to ISP modem/router by Ethernet cable. Configure Deco mesh...

@Cro_goco It appears you have properly placed Satellite Decos: they show Strong to Medium backhaul signal to Main Deco. Each Deco unit has reasonable number of client devices connected to it, no...