PCI Express 4.0 PCIE 4x to Oculink SFF-8612 SFF-8611 host card for U. 2 SSD eGPU external graphics card docking station It uses PCIE protocol to transmit PCI Express 4.0 signals; Supports PCIE 4.0 data transfer, with a data transfer rate of up to 64Gbps, and supports connecting GPU graphics cards SSD Expansion cards, etc., backward compatible with PCIE 3.0. Use this cable adapter to convert your work and easily integrate PCI-E into systems that require OCuLink connection; Enhance your system functionality with our adapters, ensuring stable and robust connectivity investments without sacrificing space or convenience.