The hp 90w docking station gives you an energy efficient 90w smart ac adapter for your notebook pc designed for use with elitebook 2170p 8440p 8460p 8470p 8560p 8570p 8740w probook 6360b 6440b 6450b 6460b 6465b 6470b 6475b 650 g1 6540b 6545b 6550b 6555b 6560b 6570b features desktop convenience with full port replication capability in a space saving design conveniently charges the notebook while it is in the docking station four usb 30 ports support for displayport 1