The should be no need to install drivers for the Corechip SR9900 it should pug into Windows 7 onward and work straight away. If you do need to install the driver manually you can they are below. These adapters are cheap sometimes $2 shipped from CN, so expect what you pay for, these are prone to failures.
These dongles are suspicious according to this article:
https://lcamtuf.substack.com/p/investigating-an-evil-rj45-dongle
