Below is a guide on where to find the drivers and how to install them properly. Official Tech-Com SSD-BT-819 Driver Sources
Are you seeing a specific in your Device Manager when you plug the adapter in? Download Driver - Techcom Technologies Private Limited tech-com ssd-bt-819 driver download
If the official driver won't run, right-click the installer, go to Properties > Compatibility , and set it to run for "Windows XP" or "Windows 7." Below is a guide on where to find