Hi! The Avalon nano 3 works fine. Very easy to set up too, connect to wifi, pick the right mining pool and done.
After that, you can choose between 3 settings: low, medium or high (high runs at around 4TH at 140 watt)

Besides that, I didn’t have any problems with mine yet 

 Thanks for your answer. Does it really warm up a room? 

 Wouldn’t say it warms up a room… if you would put it on your desk it could warm up your hands 😅 you can feel the heat when you’re close to it, but it won’t warm up a room 

 Good to know 🤣