As an expirement at the request of TP-LINK, I plugged nothing more than the printer in question to the Deco, and it still appeared as a GUEST. ie: --Internet--> Sky Router --ethernet--> Deco M5...

@FlixP Still waiting for TP Link to come back with all the information I've supplied. My issue with a device on the GUEST network is just a wired in printer with dynamic IP address. Working perfectly...

@TP-Link Yes, I have received and replied to an email thank you... The Deco M5 is in Access Point mode... No other wired devices have appeared on GUEST. The only other devices that have appeared on...

@TP-Link Here's the information you've asked for:- Picture printer is wired device on GUEST network Model of Switch Note: The Sky Router is connected straight to the STUDY DECO M5, which is then...

I noticed recently a device was on my GUEST network (which has a different password etc and isolated from the main network). This device is my HP 9020 printer which is WIRED to my network. Indeed, in...

So if my M5 keels over in the future, and it transpires there's an issue that error messages had been highlighting for year(s), guess I'll then consider referencing this thread for a refund if needs...