Buck-Boost DC-DC not recognized in device manager

When connecting the USB cable to a new installed buck-boost DC-DC 100A then the devce is not fully recognized in the device manager.
OS: Win11, latest updates installed.
I installed the device drivers from SiliconLabs.
I tested with another laptop with the same result.

The error is:
Dieses Gerät wurde angehalten, weil es Fehler gemeldet hat. (Code 43)
Fehler bei einer Anforderung des USB-Gerätedeskriptors.

This means that the device responds but did not respond correctly. Probably not a driver problem.

Any advice?
Thanks, Juerg