HP USB Docking Station + monitor stand, 321 g, 28 x 220 x 81 mm, 2.79 cm (1.1"), Windows XP (SP1 and 2); Windows Vista (32- and 64-bit), 1 audio in; 1 audio out; 1 RJ-45; 4 USB 2.0; 1 DVI-D and VGA, 11.32 oz HP USB Docking Station + monitor stand. Weight: 321 g. Dimensions (WxDxH): 28 x 220 x 81 mm, Size (imperial): 2.79 cm (1.1"), Compatible operating systems: Windows XP (SP1 and 2); Windows Vista (32- and 64-bit)