Fast performance, slick design and wireless connectivity; external hard disks offer far more than just extra storage.
Reviews in this Group Test
We take four of the best for a spin - literally - to find the best in out of the box storage for you.
How we test
The figures in the table on the opposite page show results achieved using the CrystalDiskMark suite of hard disk benchmarks. The sequential figures indicate performance with large files, and the 512KB figures show how each of the disks perform with smaller files.