To make sure you get the right setup, what (e.g., Windows 10, Windows 11, Linux) are you installing this on? If you run into any error messages during the installation, let me know so I can give you the exact steps to bypass them.
Because the official Kinamax website is no longer reliably maintained, you must be careful where you download your files. Avoid random driver-update software or sketchy forums that bundle malware into .exe installers. Here are the safest methods to get the driver: Method 1: The MediaTek (Ralink) Official Driver kinamax ts9900 driver download free