Factory Sealed First Mobile FirstDock XFR for the Dell Latitude 6420 XFR with internal power supply/3 RF's for Notebook Proprietary 6 x USB Ports Network RJ 45 DVI VGA eSATA Docking Compatibility Dell series E6400 XFR laptop Dell series E6420 XFR laptop Factory Sealed products are new, in original manufacturer packaging, and carry a manufacturer warranty. Model Number FM D XFR E3 W/PS RF Product Line FirstDock Product Name First Mobile FirstDock FM D XFR E3 W/PS RF Docking Station Product Type Docking Station Connectivity Technology Docking Device Supported Notebook Interfaces/Ports Host Interface Proprietary Total Number of USB Ports 6 Network RJ 45 Yes eSATA Yes Antenna Yes VGA Yes Serial Yes DVI Yes Miscellaneous Compatibility Dell series E6400 XFR laptop Dell series E6420 XFR laptop