How usb power management works?

Hello :wink:
I’m wondering if I can use the feature to turn off my Genelec. It goes sleep when no digital clock is available. Unfortunately Puc2 sends it even with empty frames so speakers are active all the time. What more the DDC is powered by RPI USB so maybe usb auto off feature would help but there are 2 options in Adv tab to set and I’m not sure how it works