Fangrui Product Details 1. Pci-e X8 Double Disk Transfer Card Nvme M.2 Mkey Ssd Raid Array Expansion Adapter 2. Using High-quality Pcb Circuit Board, Gold-plated Surface, Good Conductivity, Strong Wear Resistance, Anti-oxidation, High Fire Rating 3. Support Pci-e X8 And X16 Motherboard Slots 4. Support Pci-e 3.0, Pci-e 4.0 Standard Transmission Speed 5. Support 2 X4 Full-channel Full-speed Nvme Ssds And M.2 Pci-e Interface Devices 6. Adopt High-power Dc Chips To Ensure Stable Operation Of Ssd And M.2 Pci-e Devices 7. Pci-e X8 Interface, Using Thickened Immersion Gold Technology, Better Contact, More Stable Transmission Speed 8. Compatible With 223022422260228022110 Specifications 9. Support Hard Disk: M Key Hard Disk 10. Transmission Speed: 2 X 32gbps 11. Dimensions: 14.3 X 12 Cm 12. Net Weight: About 52 Grams 13. Packing: Cowhide Box Packing 14. Packing List: 15. -riser Card X 1 16. -lock Bezel Screw X 2 17. -mobile Stud X 2 18. -chassis Screw X 1 19. -lock Plate Screw X 2 20. -full Height Bezel X 1 21. -half Height Bezel X 1 22. -screwdriver X 1