This MacBook Air powers on and functions when connected to an external monitor using a USB-C display adapter. The built in display remains black, so it is being sold with a display fault. I have not attempted to diagnose or repair the issue. Aside from the display issue, the MacBook is in good cosmetic condition with only light signs of use and a few minor marks from normal use. Sold as seen due to the display fault. Please review the photos carefully before purchasing.