Features: Integrated high-speed signal enhancement technology, full-speed transmission, accurate and solid structural design. 5A high power for DC TO for DC power supply module, long-term operation is stable and can work under wide temperatures. Support for U.2 SSD, also support for 2.5" SATA HDD via SATA cable. The U.2 interface supports the NVMe standard protocol, high speed, low latency and low power consumption, bandwidth takes PCI-E3.0 x4, transmission speed up to 32 Gbit / s. Support for motherboard chipsets: B350 X370 X399 A320, the previous one is not supported. You must use RYZEN as your CPU motherboard to support NVME. Specifications: Item Name: U.2 to PCIE X4 Riser Card Material: Plastic Size: Standard Size(12x14x8.5cm/4.72x5.51x3.35in) Colour: black Quantity: 1 PC Cable lenghth:50cm Package Includes: 1pc x U.2 TO PCIE X4 Riser Card 1pc x SATA 3.0 Cable note: Adapter card only, other accessories demo in the picture is not included. No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!