FSN101-4M2 is a conversion card that connects PCIe 4.0 to 4 M.2 M keys. It can take full advantage of the low latency characteristics of PCIE to increase the speed of SSDs and increase the number of M.2 ports of host cards. The card requires SPLIT PCIe on the mainboard to support four M.2 NVMe hard drives, and the BIOS to support PCIe Slot forks. Take advantage of the fast performance and compact size of the M.2 and connect the card directly to the motherboard via the ultra-high speed PCIex4 holders based on the M.2SSD (NVMe or AHCI); The mainboard needs to support the PCIe splitting function of the BIOS. The pcie splitting function supports four X4 channels. Using M.2PCIe based drives, you can significantly increase the speed of your computer.