Kensington Notebook Expansion port replicator connects notebooks to all desktop accessories from a single USB port, while lifting up your laptop to provide cooling. • Built-in 5.1 audio support with rear, front and center speaker outputs for full theater sound • Provides USB 2.0, parallel, serial, ethernet and stereo surround sound with just one USB 2.0 connection • Kensington Notebook Expansion Port Replicator is Windows Vista compatible with driver update available from Kensington website