Eathtek Replacement Keyboard with Pointer for HP Compaq ProBook 6440b 6445b 6450b 6455b series Black US Layout, Compatible with part number 609839-b31 613332-B31 Compatible Model Numbers: HP Compaq ProBook 6440b 6445b 6450b 6455b Compatible Part Numbers: 609839-b31 613332-B31 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.