1. This adapter card converts motherboard M.2 Mkey(nvme) port to oculink SFF 8612 female port, PCIE X4 4.0 64G. 2. Connect U.2 SSD via oculink SFF 8611 to SFF 8639 cable. 3. Support to use with DOCK-OC4 external graphics card docking station. 4. Gold finger immersion gold process, using high-density low-impedance circuit board. 5. Equipped with a standard oculink SFF 8612 interface with gold-plated oculink vertical female connector. Using M.2-Mkey port and NVME PCIE standard. Support 2.5 inch NVME U.2(SFF 8639) SSD. Note:Due to different production batches, the product screen printing/batch number/appearance may be different, which will not affect the use. Colour:Black Material:PCB+Metal Package Contents: 1 * SFF-8612 Adapter Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.