You don't need a separate power connection. This is the fastest HDD I've seen for USB 3.0 portable hard drive. The drive gets its power through the USB connection.
With the Seagate Backup App from the App store or Google Play, you can backup your mobile photos and videos to the Seagate Backup Plus Fast, but you have to create and account. They say that you can connect via USB to backup you mobile device without creating and account, but I didn't find the way to do so.
With the Seagate Backup Plus Fast come a dashboard installer. After installing this software, you can manage your Portable Hard Drive and Backup your social Network.
