USB ports going away during match

[MrForbes]

Actually one of the controllers was dropping, and the other stayed "lit up" on the DS display. And we changed the dropping controller with another one during one of the last matches, and the problem persisted, with no apparent change.

We can look at power settings, but I'm a bit confused why something like that would make the USB port come and go several times during a match, while the control is being used continuously? Although I do understand that Windows works in strange and mysterious ways.

I wonder if this is the advanced setting? btw this is on my desktop, which also runs Windows 7. I could probably end global climate change by leaving the setting as is, rather than allowing the pesky USB hub to run all the time!