You can press "Ctrl+F" then fill in your laptop model in blank to confirm whether this keyboard fits your laptop or not easily. Pay Attention: If some keys will don't work after installed ,this is not because keyboard is broken but you don't connect well the ribbon cable of our keyboard 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 *Frame : Yes *Backlit : N0 *Color : Black *Letter : English *Layout : US Layout *Status : New Original Compatible Models: for Dell Inspiron 14R 2158 3421 3437 5421 5437 15Z-5523 M431R ,Vostro 2421, Latitude 3440 Series Laptop Comaptible part number: 9Z.N8VSW.001, 9Z.N8VSW.01D, NSK-L90SW 0NG6N9 Any questions about our keybard,please fell free to contact us . See more

?About Us?SUNMALL are specialized in laptop accessories for many years ,we sale thousands of keyboard out every yard and less 1% Customer complaints ,you also can contact with us when you need palce an big order,we would give you the most competitive price, hope the long business with you. ?Safe?Easy for you replace your faulty,cracked or broken keyboard ,seller remind that you should replace the keyboard in the off state. ?Specification?pls see more compatitable models below.