This product is either discontinued or we cannot get that from suppliers.
SEAGATE Backup Plus Portable STDR4000303, Interfaces1 x USB 3.0, External, Portable, Capacity 4 TB, 7200 RPM, 256 MB, Windows XP SP3, Vista, 7, 8, Mac OS X 10.6, Android 2.3, iOS 6, FF 2.5 in.
The Seagate Backup Plus (STDR4000303) 4TB portable hard drive is a state-of-the-art storage solution for backing up your multimedia collection from your computer and mobile device. A massive 4TB capacity, modern high-speed connectivity.