Recently the manufacturing trend in mainstream network storage has been to eschew using Microsoft's Windows Home Server packages, which is basically a low-powered PC, and coming up with their own proprietary machines. Seagate's? Basically just a hard drive.
It's the GoFlex Home, the networked version of their GoFlex Desk. When I say "networked", I mean that you can literally take the hard drive part out of a GoFlex Desk and dock it into a GoFlex Home and it will work just fine. Keep in mind that it doesn't actually come with that router in the image above, that's just to illustrate that it's a networked drive. But it does come with that docking station that the drive sits on.