Hi amesChen-7523,
What do you mean the Microsoft Teams V4 spec?
Could you provide the link?
For Microsoft Teams, the certified USB audio and video devices which work out of the box with no additional configuration required are listed in this article:
https://learn.microsoft.com/en-us/microsoftteams/devices/usb-devices.
However, it does not indicate that other USB devices aren’t supported by Microsoft Teams. It just recommends you use the certified devices.