Pay Attention: If some keys will don't work after installed ,this is not because keyboard is broken ,the most posiibility is ribbon cable don't connect well with your laptop ,pls try to reconnect more times .Many customers solve this problem after did this. We tested every keyboard before shipping ,please be assured the purchase. thanks You can press "Ctrl+F" then fill in your laptop model in blank to confirm whether this kryboard fits your laptop or not easily. *Backlit : Yes *Frame : Yes *Color : Black *Letter : English *Layout : US Layout *Status : New Original *Remark : Ribbon cable included Compatible part numbers: X38K3, 0X38K3, V119525AS, V119525AS1, V119525BS1, 90.4IC07.S01, AER01U00210 X38K3, T5M02, AER01U00010, NSK-DX0SQ 01 V119525AS V119525AS1 V119525BS1 90.4IC07.S01 AER01U00210 90.4IC07.S01 9Z.N5XSW.001 065JY3 MP-10K63U4-442 904IC07C1D 04W2753 Compatible Models: Compatible with Dell Inspiron 14R N4110 M4110 N4050 M4040 XPS 15 X501L x502L L502X 15 N5040 15-N5040 15-N5050 M5040 Series Compatible with Dell Inspiron 14 3420 14R 5420 15 3520 15R 5520 SE 7420 SE 7520 Series Compatible with Dell Insprion 13z(N311z) 14z(N411z) M411R Series Compatible with Dell VOSTRO 1440 1450 1550 2420 2520 3350 3450 3460 3550 3555 3560 V1440 V1450 V1550 V2420 V2520 V3350 V3450 V3460 V3550 V3555 V3560 V131 Series Note:: this keyboard does not replacement for dell inspiron 1440 1450 1550 this keyboard does not replacement for dell studio 1440 1450 1550