Product Name:PCI Express x16 to 8 U. 2 SFF-8643 NVMe SSD Adapter Card. Support Equipment:8 Port NVMe SSD or 8 Port PCIe x4 or 4 Port PCIe x8 or 2 Port PCIe x16. Host Bus Type:PCIe 3.0 x16. 8749-8I NVMe Series is PCI Express x16 Gen3 Multi-Host PCI-e switch Card….