Nimitz 2nd HDD SSD Hard Drive Caddy Adapter for Dell E6400 E6500 E6410 E6510 M2400 M4400 M4500 Modular Bay LED Available,Built-In Eject / Lock Mechanism,Comes with matched Faceplate/Bezel Works in E-Modular Bay of Latitude E6400, E6500,E6410,E6510 Precision M2400 M4400 M4500 Not compatible with other DELL E Series laptops. We have a different caddies for the other E Series laptops. Please email us if you need assistance in locating the correct caddy for your Dell laptop model