Host Bus Type: PCIe 3.0 x8. Support Equipment: 4NVMe SSD for 2242,2260,2280 and 22110mm. STC PE382-4I is a PCI Express x8Gen3 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. The adapter has a PCIe 3.0 x8 upstream port as well as four PCIe 3.0 x4 downstream ports. Dedicated PCIe 3.0 x8 bus bandwidth fully maximizes AHCI/NVMe SSDs performance, And dedicated PCIe 3.0 x4 bandwidth for each NVMe M. This card does not rely on PCIe bifurcation supported by CPU or PCH. AHCI/NVMe RAID is supported base on the motherboard chipsets & macOS Disk Utility. Independent, Stand Alone NVMe SSD Solution. Supports Windows 10 & Later, Windows 2016 Server, & Linux Kernel 3.3 & later. 2 (PCIe, M-Key, NGFF). 5 ° C to 50 ° C (41 ° F to 122 ° F). 25 ° C to 70 ° C (-13 ° F to 158 ° F). WHAT’S IN THE BOX. 1 – full-profile bracket (installed). 4 – screws&nuts for ssd.