Features: PCIE3.0 X16 full bandwidth, compatible gen4/3 protocol The Gold plated process increases the thickness of gold to 5U. Low profile board designs minimizes size to great extent possible. Equipped with SlimSAS 8i connector. Equipped with power on LED indicator light. Supports transferring 2 ports and 4 ports to 4xnvme SSDs. Supports the transmission of one full bands graphics card or 2pcsX8 bandwidth graphics card. Please note that this product is a third-party accessory and cannot fpr all configurations can achieve Pcie4.0, nor can it compatibility with all mainboards, graphics cards, extension cable, and system. If there is any uncertain information about the product, please confirm with customers service before purchasing. Note: Your mainboard needs to support PCIE split working modes. Please carefully check before purchasing. Specifications: Item: PCIe3.0 x16 to 4 Ports NVMe Expansion Card To SlimSAS 8i x2 SFF8654 Graphics Card GPU SSD Adapter Card Size:approx 11.2x3cm/4.41x1.18in Package Types: Expansion Card/ Package1/Package2 Package Includes: 1PC PCIe3.0 x16 to 4 Ports NVMe Expansion Card note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.