The RG-EW300R is a Wi-Fi extender that operates on the 2.4GHz frequency band and supports speeds up to 300Mbps. Wi-Fi extenders like this one are designed to improve Wi-Fi coverage in areas where the signal is weak or unreliable. They work by receiving the existing Wi-Fi signal from your router and then rebroadcasting it to extend its coverage range.

Here are some general steps you can follow to set up a typical Wi-Fi extender like the RG-EW300R:

1. Placement: Choose a location for your extender where it can receive a strong Wi-Fi signal from your main router but still be within range of the area where you want to improve coverage.

2. Power On: Plug in your Wi-Fi extender and power it on.

3. Connect to Extender: On your computer or mobile device, search for available Wi-Fi networks. You should see a new network with a name related to your extender (e.g., RG-EW300R_EXT). Connect to this network.

4. Access Setup Page: Once connected, open a web browser and enter the default IP address of the extender in the address bar. This is often something like 192.168.1.1 or 192.168.0.1 Or 192.168.110.1

5. You can find this information in the user manual of the extender.

6. Login: You will be prompted to log in to the extender's setup page. The default username and password are usually provided in the user manual as well.

7. Configure Settings: Follow the on-screen instructions to configure the settings for your Wi-Fi extender. This typically involves selecting your existing Wi-Fi network from a list and entering the password to connect to it.

8. Apply Settings: After entering the required information, apply the settings and allow the extender to restart if necessary.

9. Test: Once the extender has restarted, try connecting your devices to the extended Wi-Fi network. Test the signal strength and speed in the areas where you previously had weak coverage to ensure the extender is working as expected.

Keep in mind that specific setup steps may vary slightly depending on the model and brand of the Wi-Fi extender. Always refer to the user manual or setup guide provided by the manufacturer for detailed instructions tailored to your device.