AJMRTC U.2 SFF-8639 NVMe PCIe 4.0 SSD Extension Adapter, 68Pin Male to Female PCI Express PCBA Board, Direct Pass-Through for Server Workstation U.2 SSD Routing

AJMRTC U.2 SFF-8639 pass-through adapter is a professional 68pin male-to-female extension PCBA built for high-performance NVMe storage systems. It provides a direct straight-through signal path between the host U.2 port and U.2 SSD, maintaining the original PCIe 4.0 x4 high-speed transmission without signal conversion. Strict controlled impedance routing on the PCB minimizes crosstalk, signal attenuation and electromagnetic interference, which is critical for stable high-speed read and write performance of enterprise SSDs.

It supports PCIe 4.0 8GT/s per lane and automatically falls back to PCIe 3.0 8GT/s or lower versions when matched with older host controllers. The adapter works with standard 2.5-inch U.2 NVMe SSDs widely used in servers, workstations, NAS storage arrays and video editing workstations. It is a practical solution when the original U.2 connector position is blocked, or you need a short offset extension to adjust SSD installation direction and fit chassis internal layout.

No extra driver or firmware is required, plug and play after physical connection. Gold-plated contact pins ensure reliable electrical contact and long service life under frequent hot swapping. This adapter is favored by IT technicians, storage builders and server integrators for custom backplane modification, storage cabinet rework and high-speed storage testing platforms. It only supports NVMe PCIe signal transmission and does not convert between different interface types.

Specifications

1. Brand: AJMRTC
2. Interface: SFF-8639 (U.2) 68Pin Male to Female
3. Standard: PCIe 4.0 x4, backward compatible with PCIe 3.0 / 2.0
4. Signal Type: Direct pass-through, no signal conversion chip
5. Supported Drive: 2.5" U.2 NVMe SSD
6. PCB Type: High-speed controlled impedance PCBA
7. Hot Swap: Supported
8. Operating System: Windows, Linux, FreeBSD
9. Application: Server, Workstation, NAS, Storage Backplane, High-speed Storage Test