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 Please note that this is fit c55-B series laptop,do not fit c55-A series. You can press "Ctrl+F" then fill in your laptop model in blank to confirm whether this keyboard fits your laptop or not easily. *Color : Black *Letter : English *Layout : US Layout *Status : New Original *Remark : Ribbon cable included Compatible part numbers: PK1315H1A00 9Z.NBDSC.001 NSK-VA0SC 01 Compatible Models: C50-B C50A-B C50D-B C50-B1500 C50-B1503 C50-B2001 C50-B1001 C50-B2001 C50-B1001 C50-BST2NX3 C50-B03E C50-B03D C50-B32 C50-B-021 C50-B-022 C55-B C55-B5302 C55-B5299 C55-B5298 C55-B5200 C55-B5300 C55-B5296 C55-B5202 C55-B5290 C55-B5295 C55-B5201 C55-B5270 C55-B5272 C55-B5356 C55-B5352 C55-B5206 C55D-B Any questions about our keybard,please fell free to contact us .

?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?they are easy for you replace your faulty,cracked or broken keyboard ,seller remind that you should replace the keyboard in the off state. ?Specification?The keyboard is with ribbon cable!!! Compatible with Toshiba satellite C50-B C50A-B C50D-B C55-B C50T-A R50-B series laptop.