So my ix got stolen a couple weeks ago. I got my replacement one a couple days ago. With my old one (~6 months old), I had to take my laptop out to the car to do the updates until I got the power adapter that came with the 3yr deal.
The new one came with an addendum to the manual that shows you no longer need this. It will get power via the USB. Which is nice and how it should have been all along.
So is this a really new thing, or am I just late on this one?