Genuine DELL 330-0874, R427C, RM361, T545C, M520M E-FPM Monitor Stand and Laptop Notebook Dock For Dell Latitude E4200, E4300, E5400, E5500, E6400 / 6400ATG, E6500 E-Family Laptops and Precision M2400, M4400, M6400 Mobile Workstations Enables you to position the height and angle of your monitors for optimum comfort and productivity Supports flat panel monitors up to 24-inch Works with Dell E-Port and E-Port Plus port replicators Adjust the angle of monitor in up or down, raise/lower, left/right, rotate to landscape or portrait position Supported by Dell Technical Support when used with a Dell system, see description for compatibility information