Features: 1.2.5-inch NVMe U.2 solid state drive SF8639 interface to PCIe 3.0X4 riser card, no power supply cable required. 2.No power supply required, no external power cable required. 3.After the conversion, the hard disk speed is lossless. 4.Easily upgrade your desktops, workstations, and servers to NVMe SSD drives. 5.Support for Samsung (for SAMSUNG) 983 DCT, PM963, for Intel P4510, P3500, P3600, 750 series, P3700 series 900, P3520 U.2 nvme SSD. specification:It is convenient to install a high-performance 2.5" NVMe U.2 (SFF-8639) SSD solid state drive to the host's PCIe X4 3.0 slot and take full advantage of the NVMe U.2 SSD transmission performance. It is a desktop computer and a graphics workstation. A good choice for the server to install 2.5" NVMe U.2 SSD. PCIe power supply is simple, convenient, stable and reliable, designed for critical applications. 2.5-inch NVMe U.2 solid state drive SF8639 interface to PCIe 3.0x4 riser card, no power supply cable required. No power supply required, no external power cable required. After the conversion, the hard disk speed is lossless. Easily upgrade your desktops, workstations, and servers to NVMe SSD drives. Support for Samsung (for SAMSUNG) 983 DCT, PM963, for Intel P4510, P3500, P3600, 750 series, P3700 series 900, P3520 U.2 nvme SSD. s: Transmission bandwidth: PCIe 3.0 4-lane - 40 Gbps PCIe 2.0 4-lane - 20 Gbps Only supports to be installed on PCIe slots with standard heights, half-height slots are not supported Easily upgrade your desktops, workstations, and servers to NVMe SSD drives 2.5" NVMe U.2 SSD can be used as a system disk to install the operating system (requires motherboard for BIOS support for NVME boot, please consult motherboard manufacturer) Operating temperature: -40 C to + 85 C Supported operating systems: For Windows 10 - Born to support, no need to install any other software System Update is required for Windows 7 and for Windows Server 2008 R2 (https://support.microsoft.com/en-us/kb/2990941) For other operating systems, please refer to the following page https://en.wikipedia.org/wiki/NVM_Express. Package List: 1 x Adapter Card 1 x Screwdriver 1 x Bag of Screw Note: When using adapter cards, make sure your motherboard has extra graphics card slots (X4 X8 X16 is fine). The computer needs to have NVMe U.2 SSD hard drive. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.