Four Pocket Hard Drives

Back in the ‘80s, a personal computer’s hard drive had a 5.25-inch form-factor that was roughly twice the height of today’s optical drives, was heavy enough to be awkward to hold in one hand, and, at the high end, could handle as much as 100MB (if you could afford it). These days, though, small is in.

One-inch hard drives began appearing in cutting-edge media players and some smart cell phones almost six months ago. Now they’ve migrated from living inside handheld devices to being available as external, and highly portable, USB devices.

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