1. When the main board BIOS supports splitting, it can to two, and the use of MCIO one to two wires can achieve 2. Interface external design to avoid complicated wiring in the chassis 3. High-frequency, low-resistance, high-temperature and oxygen- PCB board, no deformation, color, citrine, semi-transparent, no white, no black Product model: R39M Product Name: PCIe 3.0 x16 to MCIO Split Adapter Card Speed and bandwidth: PCIe 3.0 x16 Working temperature: -40 ℃~ 80 ℃ Flame retardant grade: 94V0 Can the R39M be split? Yes, but the main board needs to support x8x8 splitting, and the product F37B or F37C can realize one to two; when the main board supports x4x4x4 splitting, it can be realized with MCIO one to two wires, . How to confirm whether the main board supports Bifurcation PCIE split? Please consult the main board manual for yourself. The manual or BIOS options explain the Bandwidth PCIE Channel Split or Bifurcation options. If they are not mentioned, they are not supported. Color: Black Material: PCB+Metal Package Contents: 1* PCIe 3.0 X16 To MCIO X8 Split Adapter 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.