How to Fix Dell Inspiron 15 - Catalina and/or BigSur / TP-Link WiFi USB nano

By Ufuk Durgun
0

How to Fix Dell Inspiron 15 - Catalina and/or BigSur / TP-Link WiFi USB nano

This mini-guide provides a structural approach to troubleshoot and fix the issue.

Prerequisites

  • Confirm your hardware specifications (CPU, GPU, Motherboard).
  • Ensure you have a bootable recovery USB and backup your EFI.

Fix Steps

  1. Verify your network controller model (Intel, Broadcom, Realtek).
  2. Ensure the correct kext (e.g., AirportItlwm or BrcmPatchRAM) is loaded in your config.
  3. Clear network interfaces and reset NVRAM if changes don't apply.

Verification

  • Reboot and verify if the functionality is restored and stable under typical usage.

Original Question:

Hi

I want to buy a WiFi nano USB, here in Brazil TL-WN725N is an affordable choice, does anybody has good experience with this model, or there any better sugesttion.

thanks in advance

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