Engadget: Seagate just took the wraps off what's likely the niftiest portable HDD to cross our path in a long, long while. The GoFlex Satellite is part storage device, part wireless media streamer, and it manages to wear both hats with little compromise on either end. For all intents and purposes, this is a standard 500GB GoFlex HDD with a bit of extra girth, an AC input, an 802.11b/g/n WiFi module and a built-in web server.
Icrontic writes:
"The Seagate GoFlex Satellite is a normal USB 3 external hard drive in most respects, save one important one: It also acts as a mobile Wi-fi media server to share files with your Android or iOS device."