NB: THERE ARE DIFFERENT VERSIONS OF KEYBOARDS MOUNTED ON THE SAME NOTEBOOK, THEREFORE YOU MUST CAREFULLY CHECK THE KEYS AND THE FLAT OF THE KEYBOARD IN YOUR POSSESSION BEFORE PROCEEDING WITH THE PURCHASE. COMPATIBLE WITH NOTEBOOK MODELS: Dell Inspiron 13Z (N311Z), 14 (N4050), 14R (5421), 14R (N4110), 14Z (N411Z), 15 (N5040), 15R (7520), 15R (N5040), 15R (N5050) Dell Latitude 3300 Dell Vostro 1440, 1450, 1540, 1550, 2420, 2421, 2520, 3350, 3450, 3460, 3550, 3555, 3560 Dell XPS L502X Compatible Product Line: 0NPC4Y, 0W19F0, 90.4ID07.S0E, 9Z.N5XLN.001, AER01I00220, MP-10K6, MP-10K66I0-442, V119525BK1, PK130OC2B14, 03058Y, 032J3M, 04341X, 0456MJ, 065JY3, 06M2M8, 09DTC7, 09HRP9, 0N76J4, 0V2J0W, 0W56CV, 90.4IU07.L0R, 904IC07C1D, 9Z.N5XBQ.00F, 9Z.N5XBQ.00G, 9Z.N5XBQ.00H, 9Z.N5XBQ.00S, 9Z.N5XBQ.00T, 9Z.N5XBQ.01B, 9Z.N5XSW.001, 9Z.N5XSW.00F, 9Z.N5XSW.00G, 9Z.N5XSW.00R, 9Z.N5XSW.00S, 9Z.N5XSW.00T, 9Z.N5XSW.00U, 9Z.N5XSW.01B, 9ZN5XBW00U, AER01600010, AER01600040, AER01600050, AER01A00020, AER01F00020, AER01P00020, AER01U00020, AER01U00110, DX0BQ, DX0SW, MP-10K63U4-442, NSK-DX0BQ, NSK-DX0BQ0F, NSK-DX0BQ0T, NSK-DX0BW, NSK-DX0SW, PK130OF2B15, PK130OF2B2J, V119525AK3