Genuine Dell PR03X E/Port II USB 3.0 Advanced Port Replicator, Compatible Dell Part Numbers: 8W9HM, T0J21, GNPHP, and XX6F0 Compatible Systems: Latitude E4200, E4210, E4300, E4310, E4500, E5400, E5410, E5420, E5430, E5500, E5510, E5520, E5530, E6220, E623