Note: Upgrading your unit will require the use of a USB flash drive with at least 15Mb of free space. Periodically Fusion may issue software upgrades for your product, these upgrades can be downloaded directly from the Fusion website. For customers with existing 700 and 205 Series marine stereos a software update. FUSION-Link™ - Certified marine Multi-Function Displays (MFD’s) become the entertainment control centre for the entire vessel once connected to the MS-IP700i Marine Entertainment System via a NMEA 2000 or Ethernet connection. The MS-NRX200 is a plug and play device with two connection options. MS-NRX200 Marine Wired Remote Controls can be installed throughout the vessel to provide full control of multiple FUSION Marine Stereos, creating flexible zone control and NMEA2000 monitoring solutions.