Eathtek Replacement Keyboard for Acer TravelMate 5740 5740G 5742 5742G 5742Z 5742ZG 5744 5744Z 7740 7740G 7740Z 7740ZG 8572 8572G 8572T 8572TG series Black US Layout, Compatible with part number KB.I170A.228 AEZYDR00110 MP-09G33U4-920