Can USB port be used for USB fan power?

I’m considering helping with the heat issue by getting a Targus 2 fan laptop chill pad. On sale at walmart.com for about $16 + shpg.
Problem is that it is powered by USB and I don’t know if the USB port on the ATV will supply the minimal power that it requires.
Anyone have a clue about this?
24” iMac Intel Core 2 Duo   Mac OS X (10.4.9)   2.33/2GB RAM/256MBV/500/WIKM

Please forgive my impatience with this question.
I remembered that I have a Kensington light. Fly light I think it is called. Anyway, I hooked it to the ATV and it worked.
So the answer to my post, yes it does supply power. Sorry that I didn’t think to check it before posting.

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