@Archeens 

Hi, welcome to our community.

Here are some potential causes and solutions for your reference:

• Power Management Settings:

  • Go to Device Manager (right-click Start and select Device Manager).
  • Find your Wi-Fi adapter under "Network adapters."
  • Right-click it, select "Properties," and go to the "Power Management" tab.
  • Uncheck "Allow the computer to turn off this device to save power."

• USB Port Issues:

  • Try connecting the adapter to a different USB port, preferably a USB 2.0 port.
  • Ensure that the USB port is functioning correctly by testing it with another device.

• Driver Issues:

  • Ensure that you have the latest drivers for the Archer T4U Plus. You can download them from the official website.
  • Uninstall the current driver from Device Manager and reinstall it.

• Network Adapter Settings:

  • Go to "Settings" > "Network & Internet" > "Status."
  • Click on "Network reset" to reset network adapters.

• Windows Updates:

  • Make sure your Windows 11 is up to date, as updates may fix compatibility issues.

• Conflicting Devices:

  • Check for any other network devices that might be conflicting with the Wi-Fi adapter. Disable or remove them if necessary.

• BIOS Settings:

  • Check your BIOS settings to ensure that USB ports are enabled and there are no settings that could affect USB devices.

• Hardware Issue:

  • If possible, test the Wi-Fi adapter on another computer to rule out hardware failure.

Thank you and best regards.