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Main image of LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

Alt view image 2 of 5 - LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

Alt view image 3 of 5 - LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

Alt view image 4 of 5 - LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

Alt view image 5 of 5 - LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

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LetLinkSo PCIe 5.0 M.2 Key-M to SFF-8639 U.2 NVMe SSD Extension Cable, 50cm/1.6ft Bottom Side Exit Riser Cord with Independent 15Pin SATA Power, Full 128Gbps PCIe 5.0 x4 Bandwidth, Backward PCIe 4.0/3

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Full PCIe 5.0 x4 support, max 128Gbps throughput, backward compatible PCIe 4.0/3.0
Unique bottom side exit layout, fits compact chassis without internal hardware conflict
Built-in independent 15Pin SATA power supply, delivers steady power to U.2 NVMe SSD
50cm flexible shielded flat cable, low signal loss for long-term heavy data transmission
Standard M.2 Key-M interface, plug-and-play without extra driver for storage upgrade

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This LetLinkSo M.2 to U.2 extension cable is engineered for high-performance enterprise storage expansion, adopting PCIe 5.0 x4 standard with a theoretical bandwidth up to 128Gbps, fully backward compatible with PCIe 4.0 and PCIe 3.0 mainboards and U.2 NVMe SSDs.

Designed with bottom side exit wiring layout, it avoids blocking CPU coolers, memory modules and other internal hardware, ideal for narrow mid-tower, mini PC and server chassis installation. Equipped with an independent 15Pin SATA power branch, it supplies stable sufficient power for 2.5-inch SFF-8639 U.2 NVMe solid-state drives under continuous high-load read-write tasks.

The 50-centimeter impedance-controlled shielded flat cable minimizes signal attenuation and electromagnetic interference to maintain consistent ultra-high-speed data transmission. Gold-plated precision M.2 Key-M and SFF-8639 pins eliminate loose contact risks. No driver installation required, directly plug into motherboard M.2 2280 slot to expand external U.2 storage, widely applied for video editing workstations, small servers and data storage array construction.

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First Listed on Newegg	July 19, 2026

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Return for refund within: 30 days
Return for replacement within: 30 days
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Item#: 9SIC4P5M1R4091