DELL 331-6307. Connectivity technology: Docking, Headphone connectivity: 3.5 mm, USB connector type: USB Type-A. Product color: Black, Brand compatibility: Dell, Compatibility: Latitude E5440 Latitude E5540 Latitude E6440 Latitude E6540 Latitude E7240 Latitude E7440. Power consumption (typical): 130 W. Width: 7.91" (201 mm), Depth: 6.69" (170 mm), Height: 2.1" (53.3 mm)