2 port MCIO 8i (74pin), high quality Amphenol SMT slot. ^^ 2x PCIe 5.0 X16 (X8 for each slot), Gen5, 85Ohm PCB, optimal traces. ^^ Can work in X8 mode with per cable. ^^ With 12V PCIe 6 pin power. DO NOT connect the wrong power connector, it will destroy the Adapter and your GPU!!! ^^ 6A 12V-> 3.3V buck voltage regulator.