If your TS-9900 has a , modern Windows (10/11) may block it with Error 10 (device cannot start) . Fix: Use a very old driver (v3.2.0.0 – v4.3.0.0) and disable driver signature enforcement.
Since the TS-9900 uses the Ralink 3070 chipset, you can search for "Ralink 3070 drivers" from reputable sources like DriverHub if the generic Kinamax installer fails.
# 7. Print a test page sudo kinamaxctl print-test
: Tools like Driver Easy can automatically detect the hardware and install the appropriate software for your version of Windows.