That does sound a bit to hot to me. Be sure the Deco is on a hard surface. If it were me, I would see if I could add something to the bottom of the router to see if I could get it a little higher off the hard surface to allow for more air flow and keep any vents clean. On all of the TP Link routers I have seen, there is a tag on the router bottom or back that shows the version number generally preceded with a "V". At least on my router, an Archer C8, when I sign on to the router, it shows the model and version number.

@Chinna_Chinna 

Yeah. It runs too hot. The surface beneath the router gets very hot too. I don't know if it is normal. It looks almost a fire hazard to me. I got the router on Thursday and plan to return it. It's a real shame that a router with very good capabilities is plagued with heat issues. 

@Chinna_Chinna 

 

I have three M9 Plus and three M5 Deco and they all got extremely hot. I believe one of the reasons is the heat dissipating holes are at the bottom.

 

This design decision is close to stupidity and ignorance if not at.

 

So I have flipped around the Deco so the heat can dissipate quicker, so the results appear to be better with measurement by my hands.

 

@Mightko 

Hi, Like any other electronic devices, the TP-Link devices radiate heat during operation. Sometimes they would get warm or maybe a little hot after running for a while depending on the environment.

Please refer to this link to relocate Deco:

https://www.tp-link.com/us/support/faq/2606/

 

While if the unit is unbearably hot, please also try to test the temperature of Deco and feel free to contact technical support.