Main control chip solution: PLX8747. Access bus: PCIe 3.0 x8. Supported devices: 4 M. 2 NVMe SSD hard drives support 2230, 2242, 2260, 2280 module formats. PLX 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. 4NVMe SSD for 2242, 2260, 2280mm. This card does not rely on PCIe bifurcation supported by CPU or PCH Independent, Stand Alone NVMe SSD Solution. Supports Windows 10 & Later, Windows 2016 Server, & Linux Kernel 3.3 & later. Suitable for small sized M. Support PCI Express, It can get the. Maximum bandwidth and transfer. Rate while the 4 M. Supports Full-height Bracket and.