HP PX971A Black notebook dock/port replicator

4xUSB 2.0, serial, 10/100-BaseT The Mobile Port Station enables you to connect your notebook to virtually any high-speed parallel, serial, audio, or 10/100-BaseT network device. It automatically recognizes new devices when plugged in - no rebooting is necessary. The Mobile Port Station expands your notebook's capabilities. You can add audio Ethernet, serial, parallel and several USB devices like mice, joysticks, keyboards and more.