Quad M.2 NVME SSD to PCIe 4.0/3.0 x16 Expansion Card PCI-e 4.0/3.0 x16 4-Drive expansion card Add 4x NVMe SSDs simultaneously via PCI-e 4.0/3.0 x16 slot on the MOBO which is required PCIe x16 Bifurcation supporting 4x32Gbps full speed signal Supports NVME or AHCI protocol M.2 SSD of 2230/2242/2260/2280 Supports the formation of soft raid in Win10 , or build raid via Third-party Software Does not support NGFF M.2 (SATA-Based B key and B+M Key) SSD Does not Support Hardware Raid Motherboard must support 'PCIEX16 Bifurcation',otherwise, only one M.2 SSD can be recognized.