You are lucky You got a2 I hate deceitful  ads ... claimed to have a backlight keyboard /.. I have googled every thing to make it light up -back light keyboard is not working —well maybe not working because it does NOT have a backlight keyboard??? very tricky wording I am sure embedding way deep down in the “fine print” .. total BS.  hmmm only had 2 days may just return it ??!!!!Seller has contacted me - back and forth with the serial number today. Waiting for a response .. will update if I a get solution or an equitable offer.