Features: M2 B+M Key-SATA3.0 x2 expansion card adopts high performance chip solution, high-speed transmission and stable performance. There are 8ports Sata ports extending the PC host to the M2 B+M Key-slot, and the transmission speed of each port up to 6Gbps.The M2 B+M Key-SATA3.0 expansion card realizes PCI-Express Gen3x2 circuit bandwidth Built in 2 Mini SAS-interfaces, supporting 8disk soft Raid-; Adopt M2 (B+M Key-) interface PCIE3.0x2 channel bandwidth, Its theoretical bandwidth can reach 16Gbps Widely used in PC server, industrial computer, consumer electronic device, storage device Plug and-play, no other software installation or setup required.Dedicated to providing users and players with faster speed, lower power consumption, high reliability and high-performance storage Specifications: Transmission protocol: PCI-E 3.0x2 Media interface: 8Ports SATA3.0 Transmission rate: 6Gbps Support: M2 B+M Key- Operating system: Win7 / Win8 / Win8.1 / Win10 Linux Material:Metal Size: approx 22x80mm/0.87x3.15in Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Piece M2 SATA3.0 Expansion Card 1Piece Mini SAS- to 4x Sata Cable 1Piece User Manual