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This PCIe 5.0 MCIO x8 to dual SFF-8639 conversion cable expands one MCIO x8 interface into two independent U.2 SFF-8639 ports, allowing simultaneous connection of two NVMe U.2 SSDs. It supports complete PCIe 5.0 high-speed data transfer and works perfectly with PCIe 4.0 and PCIe 3.0 storage hardware. An integrated 15Pin SATA power line removes the need for separate power splitters and maintains stable power output for high-performance SSDs. At 65cm (2.1ft), the flexible cable balances installation distance and clean cable management inside server chassis, workstations and multi-bay NAS enclosures. Multi-layer shielding effectively reduces signal attenuation and electromagnetic interference, sustaining consistent reliable transmission under long-duration heavy storage loads. Great for building RAID arrays, enterprise storage expansion, industrial workstation upgrades and data center storage deployments.