Dual NVMe PCIe Adapter can add 2x M. 2 NVMe SSD Slot via PCIe 4.0 x16, but also expaind extra PCIe x16 slot (x8 Signal), which can use for expanding any other PCIe Device.;
Motherboard Requirement: Motherboard can support PCIe x16 Bifurcation itself, and can be set as"PCI-e x8x4x4" in BIOS. Such as compatible with X299, X399.;
SSD Requirement: All of the SSDs are M. 2 PCI-e (M Key) NVMe SSD. CPU has enough channels to support. There is available PCI-e 4.0 or 3.0 x16 Slot on M/B.; Compatible with M. 2 PCI-e NVMe SSDs in 2230 2242 2260 2280 22110 sizes. Not support any M. 2 (SATA-Based B+M Key) SSD.; 2-Port NVMe PCIe Adapter does not Support Hardware Raid, only supports the formation of soft raid in Win10, or you may build raid via Third-party Software, and 2 SSDs should be same model.