Features: brand new and high quality Compliant with PCI for Express specification revision 3.0, backward for PCIE V2.0 and V1.0 motherboards. Compliant with Serial ATA specification revision 3.0. Support for M.2 for Key for M NVMe SSD, including 2230, 2242, 2260 and 2280 drives. Support any "for M" for key for M.2 SSD. The drive size is 110, 80, 60, 42 and 30mm. Specifications: Applicable type: for M.2 NVMe SSD conversion Bus slot: PCIe X8 rev3.0 Media interface: 2 x for M.2 for Key for M NVMe SSD connector SSD type: for M.2 for Key for M SSD size: 2230, 2242, 2260 and 2280, 22110 drives Operating system: Win 7 / Win 8 / Win 8.1 / win 10 32&64bit, Linux Package Includes: 1PC x Dual NVME for RAID PCI-E X8 split card 1PC x baffle 1PC x Screwdriver 1Set x screws note: The main board supports PCI-E split function and can set PCI-E X4X4X4 or 4X4 mode; The main board supports PCI-E for RAID function; motherboard supports the function of HyperM.2X16 expansion card; Different motherboards have different PCI-E split channels, and some motherboards have a PCI-E for RAID of X8 + X4 + X4. This motherboard 4-bit for M.2 card can only support three for M.2 SSDs or devices, and 2-bit for M.2 card can only support one for M.2 SSD or device.