Upgrading T520 from lousy Centrino Wireless-N 1000 [Condor Peak] Wi-Fi to Intel 3160.HMWG.R Dual Band Wireless AC + Bluetooth Mini PCIe card. How to handle BIOS whitelist? : r/thinkpad
Network adapter/driver "Intel(R) Centrino(R) Wireless N 1000" NOT - Microsoft Community
Fix for WiFi Issues With Intel Centrino Wireless N - UPDATED FOR WINDOWS 10 - YouTube
T420 | Lenovo Wiki | Fandom
Linux101: How to install wifi driver in Debian/Gnu Linux