Product Model:LRNV9324-2E2I Product Name: 2 External ports and 2 Internal ports PCIe 3.0 U.2 NVMe Switch Adapter Chipset:PLX 8725 Interface Type:2*SFF-8643 and 2*SFF-8644 Support Equipment:4*NVMe SSD or PCIe adapter card Host Bus Type:PCIe 3.0 x 8