This unit was purchased from IBM in 2015 and was used exclusively, seasonally, as a navigation source on a sailboat.&nbsp; It was refurbished by IBM.&nbsp; It is loaded with Nobeltec navigation software and a wide range of charts. Nobeltec states that this software runs best on Win7. It comes with Nobeltec owners' manuals and CDs, plus chart CDs. With GPS input (not included) it can be connected via serial port adapter (2 included) to an autopilot to operate the vessel. Nobeltec USB port dongle and power supply included.<div><div><br></div><div>Nobeltec is a software system that allows creation of routes with waypoints, providing a nearly infinite amount of data and flexibility of use.</div></div><div><br></div><div>IMPORTANT…$20.00 flat rate shipping cost is responsibility of buyer.</div>