If you are looking for a portable storage for your Nintendo Wii U console there is one from Oyen Digital called MiniPro. Oyen Digital MiniPro is a 1TB portable hard drive with USB 3.0 interface. This device allowed you to store games, game saves, gamer profiles, demos, and more.
Simply connect to your Nintendo Wii U using the included USB cable, and wait for a few minutes, you are ready to use it. MiniPro come in solid black enclosure with a unique aluminum body to give the hard drive maximum protection. This portable storage powered by a USB cable or the included AC adapter.
If you need one for your Nintendo Wii U, you can buy it from Amazon.com for $109.95.