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The Maxone 500GB is the price floor of this category at $37.99. It is a bus-powered USB 3.0 portable HDD in an ultra-slim form factor weighing around 100 grams, designed for portability above capacity or value. At $75.98/TB it is not a per-terabyte value pick; the Seagate Portable 1TB ($119.99) delivers double the storage for $82 more. The Maxone is the correct choice when budget is a hard constraint under $40 or the ultra-slim form factor is a specific requirement. At 4.4 stars from 59,940 reviews, it has a strong reliability record for a budget drive. File backup, occasional photo transfers, and light portable storage are its practical scope. This is not a drive for a media library or long-term archiving. For buyers who need more than 500GB, step up to the Seagate Portable 1TB. For buyers with a strict sub-$40 requirement, this is the pick.
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Last checked: Sep 1, 2026
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