Dell Inspiron 640m Part Number: 312-0373, 312-0451, 451-10284, C9551, RC107, TC023, Y9943, 312-0450, 451-10285, 451-10351, C9553, C9554, CC154, CC156, DC224, DH074, FC141, MJ440, UG679, Y9947, Y9948 DELL Inspiron 630m, Inspiron 640m, Inspiron E1405, PP19L, XPS M140