I'm often suspicious of refurbished/refurbished items but this one has been great so far. We actually have this and the 1080p version; Wow, huge difference and worth going with the 4K version. I'm using it with a 13" Macbook Pro and only experience slight screen lag/stuttering - likely due to my laptop's graphics card.

The monitor keeps turning on and off, absolutely useless for anything. The control buttons also have problems. The buttons on the back are only semi-functional and don't scroll up or press the Select button. He was returned