1.High-Speed Data fer: With 4 channels and a total fer speed of up to 128Gbps, this PCIeX16 NVME M.2 MKEY SSD RAID expansion splitter card provides high-speed data fer and reading/writing capabilities for your computer. 2.Multiple Compatibility: This expansion splitter card is compatible with a wide range of M.2 NVME protocol SSDs and M.2 PCIe devices, offering the flexibility to connect and expand multiple hard drives or devices at the same time. 3.Multiple Requirements Needed: To use this array expansion card, you need to ensure that your motherboard supports PCI-E splitting function, can set PCI-E X4X4X4 or 4X4 mode, and supports PCI-E RAID function. In addition, the CPU must support enough channels. 4.Compact Design: This RAID array expansion splitter card has a compact design, making it easy to install and carry around. Instructions for use:1. The motherboard must support:The motherboard supports the PCI-E split function, and can set the PCI-E X4X4X4 or 4X4 mode; The motherboard supports PCI-E RAID function; for ASUS motherboard supports the function of Hyper M.2Ax16 expansion card; Different motherboards have different numbers of PCI-E splitting channels. Some motherboards have a PCI-E RAID of X8+X4+X4. The 4-bit M.2 card on this motherboard can only support 3 M.2 SSDs or devices, and the 2-bit M. 2 cards can only support 1 M.2 SSD or device, if you want to use this product normally, please choose the motherboard correctly; Color: Black Material: PCB Package Contents: 1 x fan 1 x riser card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.