Product Description LRNV9547-4I is a PCI Express x16 Gen3 PCIe switch Card provides dedicated PCIe 3.0 x4 (32Gb/s) bus bandwidth for each M.2 SSD, and unlocks the true performance potential of NVMe based storage configurations. Ideal for servers & high-end desktop/workstation platforms,The all-aluminum casing naturally dissipates waste heat away from the SSD modules, and features an integrated fan and heat sink that work in conjunction to eject excess heat away from vital components and keep ambient temperatures manageable and cool.FunctionalCharacteristicsPLX PEX8747 Switch Controller has a PCIe 3.0 x16 upstream port as well as four PCIe 3.0 x4 downstream ports.Dedicated PCIe 3.0 x16 bus bandwidth fully maximizes NVMe SSDs performance, And dedicated PCIe 3.0 x4 bandwidth for each NVMe M.2 SSDThis card does not rely on PCIe bifurcation supported by CPU or PCHIndependent, Stand Alone NVMe SSD SolutionSupports Windows 10 & Later, Windows 2016 Server, & Linux Kernel 3.3 & laterApplications Suitable for host-centric as well as peer-to-peer traffic patterns, the LRNV9547 can be configured for a variety of graphics applications.Advantages Suitable for small sized M.2 SSD support PCI Express, It can get the maximum bandwidth and transfer rate while the 4 M.2 SSD installed.