The HP LCD back cover 840656-001 is a replacement display cover for supported 14-inch HP ProBook laptops. It forms the rear outer cover of the screen assembly, making it suitable when that panel cover needs replacement during a repair.
The listed compatible models are HP ProBook 640 G2, 645 G2, 640 G3 and 645 G3. The 840656-001 part number identifies this 14-inch display cover and helps distinguish it from covers intended for other screen sizes or model variants.