Sumix SMX-M7xx - Manual (Page 20)

Installation and Update: Troubleshooter
20 SMX-M7xx Series USB2.0 Camera User Guide
Figure 2-17 Device Manager: the SMX-M7x camera is detected as Unknown device
5 Right-click and select Update Driver…:
Figure 2-18 Device Manager: Updating the SMX-M7x camera driver
Run the Hardware Update Wizard the same way as the Found New Hardware Wizard
by choosing the Install the software automatically (Recommended) option: