Welcome to Linux! For your Archer T2U Nano WiFi adapter, it’s likely a driver issue since it uses the MediaTek MT7610U chipset, which often requires external drivers.

Here’s a guide to get it working:

1. Install Prerequisites:
   Open a terminal and install essential build tools:
   ```bash
   sudo apt update
   sudo apt install build-essential dkms git
   ```

2. Download the Driver:
   You can download and compile an updated driver from GitHub:
   ```bash
   git clone https://github.com/aircrack-ng/mt76
   ```

3. Compile and Install the Driver:
   Change to the cloned directory and compile the driver:
   ```bash
   cd mt76
   make
   sudo make install
   ```

4. Reboot your system after the installation to activate the driver:
   ```bash
   sudo reboot
   ```

5. Check if it Works:
   After rebooting, check if the network adapter is functioning using:
   ```bash
   iwconfig
   ```

If you still have issues, ensure that Secure Boot is disabled in your BIOS, as it can prevent third-party drivers from loading. Let me know if you need further assistance!

This post last edited by phrazle on September 17, 2024.