Look for the "A4Tech PC Camera Driver" (v1.0 or 1.1).
Features a sliding lens cover for physical privacy. A4 Tech Pk 635M Kamera Driver Vista
Limited to VGA (640x480). It looks grainy on 4K monitors. Look for the "A4Tech PC Camera Driver" (v1
Includes "anti-glare" coating to help in dim rooms. A4 Tech Pk 635M Kamera Driver Vista