I’ve dealt with these.
Hint: There’s a reason so many are now available as “refurbs”. People keep sending them back. Check the reviews.
Just go w/ a 4K monitor from someone better at making monitors.
Received mine. Well built monitor. Great picture. Problem is huge defect in screen. A reddish circle about the size of a quarter is smack dab in the center about 6” from the top. No way you can use the monitor without defect driving you crazy since it blocks image and attracts your stare.