The best driver for Atheros AR9271 chip devices, such as ALFA Tube-UNA or AWUS036NHA for Windows 10 is this driver. Note that after installing, the device will appear in Device Manager as "TP-LINK Wireless USB Adapter" instead of Atheros or Alfa. This is because TP-Link is associated with Microsoft as the Device Developer ID of the Atheros chipset.
Soon ALFA will roll the driver into their own branded release but until then, it will be normal to see the Atheros device identified this way in Device Manager after doing the driver installation.
We have tested the driver extensively and it works with well.
Video: See if the WiFi hotspots around you are 2.4 or 5 GHz on Microsoft Windows 10, Android, or iPhone
Video: Key differences of ALFA Network dual band USB WiFi Adapters AWUS036ACH, AWUS036ACHM, AWUS1900 & More
ALFA AWUS036ACHM is here: long range 802.11ac WiFi power at a low cost + a Youtube guide to Monitor mode
New Product: ALFA APCIE-10GA 5-speed 10 GbE PCIe network adapter card w/ Aquantia™ AQtion™ AQC107 chipset
How to install ALFA AWUS036ACH, AWUS1900, AWUS036AC on Kali Linux 2020.3 w/ monitor mode & injection
So you are ready to buy an ALFA 4G Camp Pro kit (coming soon) or ALFA Tube-U4Gv2 USB modem, but one question remains- how do you buy service from a compatible carrier?
It is very easy to do, but there could be some speedbumps along the way.