Because AC1200 adapters rely on dual-band technology, the driver must properly manage both frequencies. If your operating system uses a generic fallback driver, it may lock the adapter to the slower 2.4 GHz band, capping your speeds significantly below the promised 1200 Mbps. Step-by-Step Installation Guide

Search GitHub for the specific chipset repository managed by the community (e.g., searching "RTL8812BU Linux driver github").

Right-click the setup.exe or install.exe file and select .

Sometimes, Windows can automatically source the driver. Plug the adapter in, open , and click Check for updates . Check the "Optional updates" section if the driver does not install automatically. Step 3: How to Install the Driver

This guide explains how these adapters work, how to find the right drivers, and how to fix common installation issues. Understanding AC1200 and WiFi 5 Technology