ASUS ONBOARD RAM DISABLE X455LD REV 2.1 2.2, X550LD Rev 2.0, X552W X550WE REV 2.0, X550CC Rev 2.0 ,X451CA Rev 2.1 , X450LD REV 2.1, X555LP , X751MD rev1.1 rev 2.0 , X550CA X550CC Rev 2.0 , X45vd rev 2.0 , UX51VZ rev 2.0, X451CA Rev2.1 ,