1. PCIE X16 Slot Split 2 PCIEX8 (Physical Slot X16) 2. The motherboard BIOS is required to support changing the PCIE working mode of the corresponding slot to X8X8, and the motherboard models that are known to be supported are as shown below: 3. You need to set the motherboard BIOS and change the maximum connection speed of PCIE to GEN3 in the corresponding slot. 4. Gold finger immersion gold process, increase the gold thickness to 5U, and use high circuit board. 5. Gold-plated connector with metal shield with buckle. with 1 to 2 clock Split IC. With 2 energized LEDs. power supply port. 4.04CM slot spacing. Support the installation of 2 PCIE cards, support graphics card, network card, solid state drive, pass-through card, capture card, computing card, etc., and work in X8 performance at the maximum. Can be used with PCIE extension cable(Not included PCIE extension cable). Colour:Black Material:PCB+Plastic+Metal Package Contents: 2 x PCIE 3.0 x16 1 to 2 Expansion Card 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.