Connect a 2.5-inch U.2 (SFF‑8639) PCIe NVMe SSD to the PCIe x4 slot in your system using the SFF‑8643 cable (not included). This is the best and easiest solution for installing an ultra-high-performance PCIe NVMe U.2 SSD in your desktop for gaming enthusiasts and workstation users. Interface: PCIE X4 to SFF‑8643. Hardware Requirements: PCIe 3.0 x4/x8/x16, backward compatible with PCIe 2.0/1.0. Install a PCIe NVMe U.2 2.5in SSD drive into your PC system via a PCIe 3.0 x4 card. Convert a U.2 2.5in PCIe NVMe SSD to the motherboard's PCIe x4 bus slot. Supports Windows 2000, XP, Server 2003, XP 64bit, Vista, Win7, Linux, DOS, and OS X. Item Type: PCIE X4 to U.2 Adapter Card Material: PCB Interface Type: PCIE X4 Applicable Models: Conventional Desktop Computer Expansion Interface: Mini-SAS HD (SFF-8643, 36 Pin) Female Support System: for Windows2000, for xp, for server2003, for xp 64bit, for Vista, for win7, for linux, for DOS, for OS X Hardware Requirements: PCIE 3.0 X4/x8/x16, Backward Compatible with PCIE 2.0/1.0 Package Includes: 1 x PCIE X4 to U.2 Adapter Card