It's on an mRain Stand [0], so all ports and vents are exposed fully and I've never detected any extra warmth from having the lid closed. I prefer the lid clos

It's on an mRain Stand [0], so all ports and vents are exposed fully and I've never detected any extra warmth from having the lid closed. I prefer the lid closed so OSX doesn't try to treat it like a third screen- my laptop gets docked to the left and pretty much behind my left hand side monitor, making it un-viewable. [0] https://www.amazon.com/Rain-Design-mStand-Laptop-Patented/dp/B000OOYECC https://www.amazon.com/Rain-Design-mStand-Laptop-Patented/dp...