PCIe Gen3.0 8Gbps max ,PCIE 3.0 transmission efficiency more than 2%. | EMI Shielding with Conducting Polymer. | No need BIOS without USB transfer, stable and durable. | Eight CARDS measured, directly into the motherboard graphics with directly, PCIE extended without power supply, without setting the BIOS, without secondary USB transfer. | Applicable to high-end sound card, professional acquisition card, network card, wireless card, data cards and so on.