Gateway NX550, NX850, S-7500, S-7700, M460, M680 Port Replicator - 1533573Increase your productivity and maximize your power, networking and external devices with the NX550X, NX550XL, NX850X, NX850XL, S-7500N, S-7510N, S-7700N, M460, M680 Port Replicator. Although devices can be attached directly to your notebook's ports, the port replicator lets you make multiple connections in just one step. Push-button eject provides easy undocking. The port replicator offers the following functionality: DC In, Audio In, Headphone Jack, IEEE1394, 4 USB, 9 pin Serial, 25 pin Parallel, 15 pin VGA, S-Video, RJ45 and RJ11.