1. When the main board BIOS supports splitting, it can be one to two, and the use of MCIO one to two wires can achieve one to four 2. Interface external design to avoid complicated wiring in the chassis 3. High-frequency, low-resistance, high-temperature and oxygen-resistant 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, one to four. How to confirm whether the main board supports Bifurcation PCIE split? Please consult the main board manual for yourself. The manual or BIOS options will 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