2. High Speed: Equipped with PCIE3.0 X4 Gen3 interface, U.2 hard drive speed allows you to play at a higher level, so you can read and save transfer to enjoy the highest speed! 3. U.2 interface: The U.2 interface uses two SATA 6 Gbit/s interfaces and one 4-pin mini SATA interface. Small ports can only be connected do PCIE cables to ensure backward compatibility. 4. Warm tips, use this adapter with a U.2 solid-state drive because the system drive must support the PCI express protocol to be able to use the computer's motherboard. 5. Durable and safe: electronic components, one-piece forming, high-quality induction coils, 25V high voltage capacitors, reserved half of the input voltage margin to prevent the situation of insufficient power supply. . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card Material: eco-friendly fiberglass, metal stopper Function: Data transfer, mounting system Supported hard drive: 2,5-inch U.2 SATA SAS hard drive (with logo SATA available). Transfer Interface: PCIE X4 X8 X16 Compliant, SATA3.0 Product Interface: U.2, SFF 8639 Supported Systems: for Windows 7 8 10, for Linux, for OS X 10.9 or later . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card 1 x Screwdriver 1 x do data cable SATA 2 x Large Screws 6 x small screws 1 x User Manual . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card . PCIE to U.2 adapter card PCIE3.0 X4 to SATA adapter card CL card