Thanks for the info.
I was pretty sure it needed to be powered. Just got my Sling Adap and don't like using the front plug. Have an HD on the back one.
Sling works good on my Droid but the pc isn't so great. Audio is out of sync and picture stutters sometimes. Using Firefox. I have plenty of bandwidth. Oh well.
Hope I get my rebate or this will be a c-note down the drain!