Eathtek Replacement Keyboard for 17.3 inch HP ProBook 4720s series Black US Layout (Can not be used in 15.6 inch laptop) Can not be used in 15.6 inch laptop Compatible Model Numbers: 17.3 inch HP ProBook 4720s Replacement and high quality,Replace your faulty, cracked or broken keyboard Each keyboard is tested before shipping All pictures are taken from the real item, please check carefully before bidding.