Acer Aspire 3410T 3810T 3820T 4410T 4810T 4820T US Laptop Keyboard 90.4HL07.S1D, KB.I140A0.859, KB.I140A.087 Genuine Acer Aspire 3410 3810 4410 4810 Series Laptop Keyboard U.S. English International version, 87 keys Acer P/N: KB.I140A0.859, KB.I140A.087; Model Number: 90.4HL07.S1D