MacBook arrived in good aesthetic condition. However, upon setting it up it could not stay connected to the WiFi. I called an Apple associate and she was able to run a diagnostic on it.  It came up with two error codes: VFD001 and ALS001. She said I need to take the MacBook to an Apple Store for repairs. So, bear this in mind whenever you order a used product online.  There’s always a risk that something is faulty.