I really like this USB Hard Disk from Seagate company, which is the best Hard Disk maker as per my experiences, I used both internal and external Hard Disk of Seagate and found no issue from past 3 to 4 years, it is very comfortable to carry and compatible with any operating system. easily plug and play, only disadvantage is that it is little heavy.
The best portable hard disk to take your data backup for emergency purpose, also can save it for a very long time, it comes along with the USB cable and power adapter. warranty service is also very best and quick.