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 : YES *Color : Black *Layout : US keyboard layout *Status : Brand new Compatible Models: for Acer Predator Helios 300 PH315-52 PH315-53 PH317-53 Acer Nitro 5 AN515-43 AN515-54 AN515-55 AN517-51 Acer Nitro 7 AN715-51 LG05P_T90BAL NKI15130UH PK132TX1A00 n20c1 n20c2