For Lenovo ThinkPad X230s X240 X240s X250 IPS Display 12.5" FHD LED LCD Screen
This item is only compatible with Lenovo ThinkPad X230S X240 X240S X250 X260 X270 X280 1366x768 Version! (If you have a X230S X240 X240S or X250 you can't use your keyboard to adjust the brightness but only in system setting).