SUNMALL Laptop Keyboard Replacement Without Backlit Compatible with Inspiron 15 3521 3537 15v-1316 15R 3521 3537 5521 5528 5537 5535 M531R, atitude 3540, Vostro 2521 US Layout P/N NSK-LA0SC NSK-DY0SW UniqueThis keyboard is without backlit /backlight! This keyboard is compatible with dell Inspiron 15 3521 3537 15v-1316 15R 3521 3537 5521 5528 5537 5535 M531R atitude 3540 Vostro 2521 series laptop. NoteNOT FIT 14R(5421) and 15 5421. Size: 35.5(L) *10.6(W)*0.55(H)cm, please double check the workable laptop model no. before you order. SafeEasy for you replace your faulty,cracked or broken keyboard. ,seller remind that you should replace the keyboard in the off state. WarrantySUNMALL laptop keyboard are new and original,100% tested before shipping,providing 6 months warranty and 24-hour after-sale service,create an environment of worry free shopping! About UsSUNMALL 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.