Cannot configure USB Serial Communication over USB-A on Portenta Machine Control

[MKOSdm]

I am trying to configure USB serial communication (CDC ACM) over the USB-A port on my Portenta Machine Control. Despite initializing the USB host and adding the CDC backend to the class table, my program cannot detect or communicate with the connected USB device.

[leonardocavagnis]

Hey! Could you provide more details about your setup and the sketch you're using? Thanks