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Main image of PU21 Dual U.2 to PCIe 4.0 X8 Adapter Card, No Onboard PCIe Bifurcation, Support Software U.2 SSD RAID, Require Motherboard PCIe Bifurcation

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PU21 Dual U.2 to PCIe 4.0 X8 Adapter Card, No Onboard PCIe Bifurcation, Support Software U.2 SSD RAID, Require Motherboard PCIe Bifurcation

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Converts PCIe 4.0 x8 slot to dual U.2 SFF-8639 ports for simultaneous two NVMe U.2 SSD operation.; Without built-in PCIe bifurcation chip, needs motherboard native PCIe bifurcation function to work properly.; Allows creating U.2 SSD software RAID via system operating system tools for data redundancy and performance boost.; Fully compliant with PCIe 4.0 high-speed transmission standard, backward compatible with PCIe 3.0 for broad compatibility.; Compact standard card design, suitable for desktop, NAS, workstation and small server storage expansion.

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The PU21 Dual U. 2 to PCIe 4.0 X8 adapter card is professionally designed for high-speed U. 2 NVMe SSD storage expansion. It provides dual U. 2 SFF-8639 interfaces to connect two U. 2 NVMe SSDs at the same time. This adapter has no onboard PCIe bifurcation function, it must work with a motherboard that supports PCIe bifurcation to recognize both U. 2 drives normally. Users can set up software RAID for U. 2 SSDs through system OS tools to improve read-write speed and data security. Supporting PCIe 4.0 full-speed bandwidth and downward compatible with PCIe 3.0, it fits most mainstream Intel and AMD motherboards.

Stable circuit layout and anti-interference design ensure long-term stable operation under heavy load. Perfect for DIY PC storage upgrade, NAS construction, workstation and entry server high-speed storage expansion scenarios.

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First Listed on Newegg	August 18, 2026

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Item#: 9SIC75JM4V1069