What is the difference between PCIe Gen 3 X2 and X4 SSDs? Can these two SSDs be used for laptops that support the PCIe interface? - Quora
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Amazon.com: IO Crest M.2 SSD + SATA to Pci-E X2 Hardware RAID Card (B or B+M Key) (SI-PEX50102) : Everything Else
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ASRock Z97 Extreme6 Tests Samsung XP941 M.2 x4, Plextor M6e M.2 x2 and Samsung 840 Pro SATA 3 SSDs | The SSD Review
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