Things to prepare:
USB Type-C to RJ45 Adapter,
RJ45 Cable/internet cable
Router (with Internet)

1.  Plug the Rj45 cable to the router.
2.  Connect the Rj45 cable to the adapter.
3.  Connect the adapter to your phone (with USB C Port that supply OTG).
4.  Now check the notification and if you see the "Ethernet cable connected" on your phone, then set up the configuration.
     4.1. If not, you have to go to Setting -> Connections -> More connections settings -> Ethernet -> Configure Ethernet device. Before connecting the device, you have to configure, otherwise, you can not figure the device's IP address. Recommend choosing the DHCP, with auto-config -> None. 

5. Then enable the Ethernet. (Don't forget to turn off your mobile data.)  
6. Next, check the indicators on the adapter if it is blinking.

Finally, you are good to go. 

• Plug the USB-C connector on the adapter into the USB-C port on your USB-C device.
• Take an Ethernet cable that’s plugged into a router, switch, hub, or modem, and then plug the other end into the Ethernet jack on the adapter.
• To check your Ethernet connection, on your USB C device, select the Network icon on the lower right side of the taskbar.
• In the list of networks, you should see the name of the Ethernet network with the word Connected underneath.
• IMPORTANT:  *If you’re having problems with your network connection, check out Fix network connection issues in Windows 10 on the Microsoft website.

Step 1. Connect the adapter to the USB C port on your MBP.

Step 2. Connect an Ethernet Cable to the Adapter(recommend CAT6 or above).

Step 3. Connect the other end of the Ethernet cable to your modem or router.

Now you have set all up. 

* If you follow all the steps still cannot get the internet please check the below troubleshooting. Or find ushere.

Don't worry, please follow the below steps for self checking first.

1. Have you tried other ports on our adapter?

2. Have you tried other laptops on our adapter?

3. Reboot your laptop.

4. Try other Ethernet cables to see if it works.

5. For Mac user: 

    Please try to reset the System Management Controller.

    For Windows user: 

    Check out Fix network connection issues in Windows 10 on the Microsoft website.

 6. Please kindly try out the official Realtek driver.

 If none of them can resolved you issue, please get in touch with us for a free replacement.

NO.

This item does not compatible with Nintendo Switch.

Since for Nintendo switch, they have their own and only protocol for the type-c port, not compatible with most on the market.