Hi Warren I sat my 3 units on their sides on top of a furniture with enough distance from other devices and not on wall. It seems to have reduced the heat. @WarrenTDO

PD2 wrote I have 3 Deco M9 Plus devices are pretty warm (they are brand new and recently bought from Costco). 2 of them are 47 degrees Celsius and 3rd one is 51 degrees Celsius. The specification...