Key benefits Provides PCIe 4.0 x4 GEN4 bandwidth for expansion cards, enabling performance PCIe devices while remaining backward compatible with PCIe Gen3 hosts. Supports M.2 port connections through standard OCulink extension cables to PCIe cards, offering flexible expansion options. Includes an oculink adapter board that enables devices with an oculink port to expand PCIe cards in a system. Versatile expansion for a range of PCIe devices including GPU graphics cards, PCIe network cards, PCIe sound cards, and PCIe capture cards. Note that PCIe array cards only support X4 devices. Specifications and capabilities Maximum bandwidth: PCIe 4.0 x4 GEN4 Compatibility: Backward compatible with PCIe Gen3 Interfaces supported: M.2 port via OCulink extension cables to PCIe cards; oculink adapter board to connect oculinkport devices for PCIe expansion Supported device types: GPU graphics cards, PCIe network cards, PCIe sound cards, PCIe capture cards, etc. PCIe array cards are limited to X4 devices Use scenarios Scenario 1: Expand a workstation or server with limited PCIe slots by connecting a GPU, NIC, or capture card using an oculink extension cable, increasing functionality without motherboard PCIe slot rearrangement. Scenario 2: Build a compact, flexible testing or production workstation by leveraging the M.2 port option through OCulink to connect NVMe or other M.2 devices to a PCIe expansion card. Scenario 3: Develop, test, or benchmark PCIe devices by using the oculink adapter board to bring devices with oculink ports into a PCIe expansion setup for quick swaps and evaluations Notes The PCIe array card option is compatible only with X4 devices.