Windows 11 has a robust database of generic drivers. Often, the system can find the correct driver automatically if you prompt it to look.
The ASUS X550L typically uses one of two Bluetooth/Wi-Fi combo chips: asus x550l bluetooth driver windows 11
Some variants may also use an Intel or Broadcom module. To check yours: Windows 11 has a robust database of generic drivers
If Windows Update fails, you will need to manually install the driver. Since there is no Windows 11 section for the X550L, you must use the Windows 10 driver, which is highly compatible with Windows 11. Some variants may also use an Intel or Broadcom module