SpecificationThis keyboard is with Backlit, compatible with HP Probook 450 G0, 450 G1, 450 G2, 455 G1, 455 G2, 470 G0, 470 G1, 470 G2 series
Compatible Part No.721953-001 727682-001
Solution of keys don't workIf some keys don't work after install ,You can try to reconnect the ribbon cable in case bad connected ,pls use a dry cloth to wipe metal head of the connect ribbon,then try to connect about few times,many customer solve this problem after did this.