PCIE X16 full bandwidth 4.0, GEN4 protocol, compatible with gen3/gen4. Support multiple adapter card arrays. Adopt high-density low-impedance 4-layer circuit board. With power-on LED indicator. Adopt step-down 1C and high-current inductor. Dwarf PCB design, minimize the size, and the ultra-small size does not occupy server space. Support 2-port SFF8654 to a full-bandwidth X16PCIE. Adopt graphics card PCIE6P power supply port. The motherboard B10S must support pcie splitting. Support 4-port conversion to connect 4 nvme solid-state drives or 4 U2 hard drives. Supports conversion to 1 full bandwidth graphics card or two X8 bandwidth graphics cards. This product is a third-party accessory, and there is no guarantee that all configurations will reach Pcie 4.0 and there is no guarantee that it will be compatible with all motherboards, graphics cards, extension cables, and systems. Colour:Black Material:PCB+Components Package Contents: 1 * adapter card 1 * adapter board 1 * cable 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.