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 *Backlit : No *Color : Black *Layout : US keyboard layout *Status : Brand new Compatible Models: for IBM Lenovo THINKPAD T440 T440P T440S T450 T450s T460 T431s E431 e440 l440 l450 l460 t450s 01AX340 04Y0874 01AX332 01AX335