Features: 1.Fast Transmission: Computer hard drive enclosures transfer 4 M.2 slots through the PCIe 3.0 x 16 slot of the host, support NVMe, use PCIe 3.0 x16 bus bandwidth, and the transmission bandwidth is up to 128Gb/s. 2.Good Heat Dissipation: The SSD adapter card supports the new NVMe drives, and the large heatsink reduces the temperature of the M.2 SSD, enabling unrestricted transfer speed and higher reliability. 3.Wide Application: M.2 SSD adapter card is committed to providing mass storage and high speed requirements for the majority of high end hosts, workstations, audio and video processing, and e sports players, supporting PCIe 3.1, 3.0, PCIe 2.0 motherboards. 4.Easy to Install: PCIE3.0 GEN4 to M2 NVME expansion card is easy to install, no driver required, 4 screw holes 2230, 2242, 2260, 2280 can be used to fix NGFF SSD card, 4 screw holes can be used to fix PCB board. 5.Wide Compatibility: M.2 NVME expansion card supports 2230, 2242, 2260, 2280 size NGFF SSD, and supports four available NGFF M.2 (M Key) sockets, supports PCIe x16 slot. specification:Item Type: PCIE3.0 GEN4 to M2 NVME Expansion Card Material: PCB Transmission Bandwidth: 128gb/s Number of M.2 Slots: 4 Interface: PCI E 3.0 X16 Hard Disk: Support 2230, 2242, 2260, 2280 Size NGFF SSD PackageList:1 xPCIE3.0GEN4toM2NVMEExpansionCard 1 x User Manual 1 x Screw Pack 1 x Screwdriver 1 x Heat Sink (4 Pieces) NoteDo not support splitting motherboards and BIOS, only recognize one module.