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 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 accessory, and there is no that all configurations reach Pcie 4.0 and there is no that it 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.