This is a genuine Asus black bottom case.
Listed is a genuine Asus bottom case. This oem part is black in color. It fits the below models which have a 15.6″ display.
Compatible Models: N591LB, N591LN, N592UB, Q551LN, Q552UB
Part Numbers: 90NB0691-R7D100, 90NB0691-R7D200