Yacht Devices YDNU-02NF User Manual - page 13

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Figure 1. Windows 10 with a connected Device

You will see one or more USB serial devices. You can eject the USB cable to detect which one  

is NMEA 2000 USB Gateway.

Please remember the port number which was assigned automatically to the Device. If the port number  

is above COM9, you must change the port number to COM1 — COM9. Open the device’s properties, switch 

to the “Port Settings” tab, and click the “Advanced…” button. Select another port number in the bottom left 

corner (see Figure 2). Usually you can ignore the “in use” mark near the port number, it means that this port 

was assigned to some other device previously; some computers have dozens of ports “in use” when actually 

there are no devices connected.