Serving Business, Government, OEM, Education and the General Public since 1994   Home   •   Contact   •   Terms   •   Cart Search:    You are currently a customer. Click on a button to change countries: GMS 10 Network Port Expander (Garmin)     ID# 010-00351-00    Reg. Price: $249.99     Our Price: Click ORDER to order or see our price. The GMS 10 Network Port Expander is designed to support the connection of multiple sensors and GPSMAP 3000 series chartplotters to the new Garmin Marine Network