HDD drives such as this one tend to be cheaper than an SSD drive, but they're not as fast. Potentially a perfect choice if you happen to be looking for an HDD drive.
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LaCie 2big Dock V2 40TB
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LaCie 2big V2 Dock 40TB Thunderbolt 3 , USB3.2, 2 Bay RAID External St
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LaCie 2big Dock v2 Thunderbolt 3 - 40TB