Waveshare PCIe X1 to PCIe X16 Expander, Using With M.2 to PCIe 4-Ch Expander, 24003 Features: 1. For M.2 M interface to PCIe ports: M2-PCIe-Switch-4P Supports 1-Ch M.2 M To 4-Ch PCIe X1 (Note: the output are PCIeX1 ports, not the USB ports); PCIe-X1-TO-PCIe-X16-Cable supports PCIe X1 To PCIe X16 2. Reinforcement design, better protection 3. Multi-layer circuit boards for lossless transmission 4. Neat interface layout: Can effectively reduce interface interference and ensure stable data transmission 5. Expand To 4-Ch PCIe port: Suitable for application scenarios that require multiple PCIe ports at the same time M2-PCIe-Switch-4P 1. Transfer interface: PCIe X1 female port x 4, M.2 Mkey male port x 1 2. Operating system: Windows linux 3. Dimensions: 80.0 x 22.0mm PCIe-X1-TO-PCIe-X16-Cable 1. Transfer interface: PCIe x 1 female port x 1, PCIe X16 port x 1 2. Power supply interface: - 6PIN header x 2 - 4PIN header x 1 -SATA 15PIN header x 1 3. Dimensions: 119.80 x 44.83mm