SYBA U.2 (SFF-8639) to M.2 M-Key NVMe Adapter Model SI-ADA40121 Type: U.2 (SFF-8639) to M.2 M-Key NVMe Operating Systems Supported: Windows OS Specifications: IOCrest SI-ADA40121 provides the capability to utilize an Intel 750 Series 2.5 NVMe SSD (SFF-8639). Comes with PCIe 3.0 x4 (12 Gbps) bandwidth that can be used if motherboard comes with M.2 M-key slot. Otherwise M.2 adapter will be needed. Package Contents: 1 x U.2 to M.2 adapter 1 x SFF-8639 NVMe to SFF-8643 Mini SAS cable 1 x User Manual