Features: Supports 4-port NVMe M.2 (2242/2260/2280) up to 256Gbps in one card- by utilizing PCle4.0 bandwidth PCIE4.0 X16 Interface with server-grade (low loss) PCB- material, compatible with- PCI-express x8-and x16 slots- Supports data transfer up to 2.5Gb(250MB/s),5Gb(500MB/s),8Gb(1GB/s),16Gb(2GB/s) Supports 4-port NVME M.2 M-Key socket available and Supports 2230, 2242, 2260, 2280 size NVME SSD Easy installation & no driver required Specifications: Type: Array Card Bus- bandwidth: PCI-Express 4.0 Number of ports: 4 Full speed transmission rate: 256 Gbps Working temperature: 0 to 55 Storage temperature: -40 to 70 Operating system supports:Windows98se/2000/xp-/server2003-2008/Vista-/win7/win8/WIN10/WIN11,32/64-bit; Linux- Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. Package includes: 1PC PCIe 4.0 x16 to 4-port M.2 SSD RAIDs Card Riser