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Samsung's 840 Evo repair tool available to download, but be careful of the caveats when you update - ExtremeTech
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Inside the Drives & Spare Area - Samsung SSD 840 EVO Review: 120GB, 250GB, 500GB, 750GB & 1TB Models Tested
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Samsung 840 EVO mSATA SSD Review (500GB) - Exceptional Performance in a Large mSATA Capacity | Technology X
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