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This SFF-8639 U.2 to M.2 M-Key adapter converts a U.2 (SFF-8639) interface into an M.2 M-Key slot, enabling you to connect NVMe M.2 SSDs to motherboards with U.2 ports. It is fully compatible with Intel 750, P3600, P3700 series U.2 SSDs, serving as a cost-effective replacement solution. Supporting M.2 SSDs in 2230, 2242, 2260, and 2280 form factors, it meets diverse storage upgrade needs. Compliant with PCIe 4.0 specifications and backward compatible with PCIe 3.0, it ensures high-speed data transmission without performance loss. The adapter features a compact, durable PCB with gold-plated contacts for stable connectivity and reduced signal interference. Plug-and-play functionality simplifies installation, making it ideal for desktop, server, and industrial motherboard storage expansion.