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PU41 Quad U.2 to PCIe 4.0 X16 adapter card is designed for high-capacity high-speed storage expansion, offering four independent U.2 SFF-8639 interfaces to connect four U.2 NVMe SSDs simultaneously. This model comes without onboard PCIe bifurcation function, it is mandatory to pair with a motherboard that supports PCIe bifurcation to identify all four U.2 SSDs normally. You can easily configure software RAID through operating system built-in tools to optimize transmission speed and realize data backup protection. It follows PCIe 4.0 high-bandwidth standard and is backward compatible with PCIe 3.0, fitting most mainstream Intel and AMD motherboards. With premium circuit design and anti-interference layout, it maintains stable low-latency performance under long-term heavy load. Perfect for professional NAS construction, workstations, small servers and high-end PC large-capacity storage upgrade.