I use my P2415Q with my laptop. When I disconnect my laptop and my monitor goes into standby, it doesn't continue to power the USB ports (so I can't leave various devices charging). From the manual, there looks like there should be an option (Energy->USB) to control this behavior. But when I try to set it, the USB option is greyed out (see attached pic).
Image may be NSFW.
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Can P2415Q keep the USB ports powered while it is in standby mode and no computer is attached to the display or USB inputs?
