The HP Essential USB 2.0 Port Replicator is an ideal expansion solution for HP Business Notebooks that do not support traditional docking, like HP ProBook s-series, HP Mini notebooks and Compaq Business notebooks. Because USB is an industry-standard protocol that works on almost every computer, this docking solution is compatible with a wide variety of HP and third-party notebooks, as well as with a broad range of older generation notebooks, so there's no need to refresh (and incur additional costs) should you change or upgrade notebooks.