Logitech brio 4K mode only works on its own cable?

I got a Logitech Brio camera and wanted to set up for 4K video. However, somehow the 4K mode was recognized by the windows only with the original usb-c to usb 3.0 cable sent through the box.

I tried a usb-c to usb-c cable and usb-c to usb 3.0 cable by amazon. The windows was able to recognize it as a HD camera, but not a 4K one.

Why Logitech brio 4K mode only works on its own cable? Which kind of cable are compatible with Logitech brio 4K mode?


So I've done some testing using a MacBook Pro 2017. All tests were performed using OBS 25.0.6 and Brio with Firmware 2.0.28, EEPROM 1.18 and Sensor 5.5

Observations:

  1. Using any usbc to usbc cable limits the camera to MJPEG on 1080p/30f.
  2. Using the Logitech supplied cable and an Anker USB-C to USB 3.1 adaptor (AK-848061067804) I can get 2160p/30f MJPEG and 1080p/30f NV12
  3. Using good quality cables (e.g. Anker USB-c to usb3 / AK-A8169091) gives the same result as 2.

Conclusion: If you want NV12 or 4k resolution you need a quality usb3 cable that supports data rates > 480mbps . USB-C to USB-C cables only support 1080p/30f/MJPEG.