You can find this information printed on the back of your keyboard.
Dell Latitude E6400 E6500 Precisionn M2400 Microphone Board - 0XP558 XP558
English British Keyboard Dell Latitude E6400 E6500 NSK-DB10U 0HT517 507
Dell Latitude E6400 Hinge Set of Left Right Hinges
Laptop Screws For Dell Latitude E6400 Bottom Case Base Cover Underside
Laptop Screws For Dell Latitude E6400 Base Cover Bottom Case Lower Chassis
Dell Latitude E6400 Volume Button LED Cover Trim
