The FM-D-XFR-E-W FirstDock Custom Docking Station, from First Mobile Technologies, is an excellent docking option for your Latitude E6400XFR Laptops. It offers two custom features, a USB port in the front of the dock as well as a second serial connector for added convenience. This docking station is tested to military standard (MIL-STD 810F) and Standard of Automotive Engineers (SAE J1455) - the ultimate benchmark for vibration and crash resistance certification. Besides, it is equipped with screen holder for added stability and a key lock for increased security. The Aesthetic powder-coated finish protects from smudges and scratches and optimal footprint provides maximum user space. With all these features and constructed of heavy gauge metal, this docking station is made to withstand even the toughest of the environments. FM-D-XFR-E-W/PS