Key Features two 56G PCIe 5.0 MCIO 8i input one PCIe x16 electrical/mechanical output PCIe gen5 - high quality SMT slot, 85Ohm Ultra Low Loss PCB can work in x8 mode with one cable (input near the power plug) can work in x16 mode with both inputs connected (must be the same CPU host port and lane ordering must be 0-7->8-15, NOT 8-15->0-7, switching the cables will help! ) GPU Power connector to supply 12V. DO NOT connect the wrong power connector, it will destroy the Adapter and your GPU!!! 6A 12V-> 3.3V buck voltage regulator