【M.2 NVME SSD to PCIe x16 Expension Card】 4 M.2 NVME SSD (M-key) to PCIE 3.0/4.0 X16 RAID Card, high-speed transmission 4x32Gbps full-speed transmission, multi-system compatible can be used for Windows/for Mac OS/for Linux. | 【RAID Card Adapter】 VROC disk array, support for Windows 10 Soft RAID. If you want to raid, be sure to use 4 hard drives with the same specifications and the same model to ensure the consistency of hard drive performance. | 【M.2 SSD support】only supports 2230 2242 2260 2280 size NVME protocol or AHCI protocol M.2 NGFF SSD, it is important to note that the AHCI protocol is not equal to the SATA protocol. | 【Matching hardware support】 all servers and X99 motherboards are supported. Other motherboards support X299, Z370, Z390, X399, X570, B550, X470, B450, Z490, Z590, TRX40, C422, C621, W480. | 【Note】 You can run 4 NVME SSDs at the same time, but 1---The motherboard must support PCI-E RAID function or PCIe signal splitting (support splitting PCIE X16 into 4 PCIE X4). The motherboard BIOS shows "PCIEX16 Bifurcation" and "PCIE 4x4" generally support splitting. 2---The motherboard needs to host PCIe 3.0 4.0, otherwise the speed cannot reach full speed.