High-Speed flexible cable is for 1U, 2U, and ATX/BTX chassis; Stable PCIe Gen3 8Gbps or higher speed with high-quality Axial Cable.; Supports high-speed PCI-E 1X, 4X, 8X and16X card, but work at 1X speed only; Experienced design and durable material for High frequency and low attenuation.; PCB-Swaddled and fixed with Bolts and nut to prevent tearing and short circuit for PCB-Cable solder points.