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This is an extension adapter cable for M.2 NVMe SSDs. It connects a Key-M male plug to a Key-M female socket, letting you relocate or extend a PCIe 3.0 M.2 NVMe drive away from the motherboard slot.
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It is typically used to reposition an NVMe SSD for space constraints, custom PC builds, test benches, cooling improvements, or specialized enclosures while maintaining connection to the motherboard’s M.2 Key-M slot.
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It is generally compatible with M.2 NVMe Key-M SSDs using PCIe protocol. It is not usually meant for SATA-based M.2 drives, so checking your SSD and motherboard interface is important before buying.
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Many extension cables support PCIe 3.0 speeds, but actual stability depends on cable quality, length, shielding, and system design. Longer or lower-quality cables may reduce signal integrity and cause detection or performance issues.
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Key-M refers to the notch layout on the M.2 connector, commonly used for NVMe SSDs with PCIe x4 lanes. Both the host side and SSD side of this extension are designed for Key-M NVMe connections.