Designed for installing fast SSDs with a U.2 interface (CFF-8639) in a PC without a standard U.2 connector, thereby providing all the speed capabilities of a device with a U.2 interface. The SFF-8639 NVMe SSD PCIe adapter supports standard 2.5- inch PCM 2.5M or 2.5" SATA NVMe SSD hard drives for connecting to desktops, workstations or servers via PCIe x4 connector. This adapter supports all standard 2.5" NVMe SSDs such as Intel DC P3500/ P3600/P3700, Samsung XS1715, OCZ Z-drive 6000, HGST Ultrastar SN100, etc. Support 2.5" NVMe PCIE SSD (SFF-8639 interface) in PCIE x4 slot for installation in servers, workstations, home PCs .Support PCIE Gen3, PCIE Gen2, PCIE Gen1, suggest using PCIE Gen3 slot for high performance. When installing SSD with OS, please make sure the motherboard BIOS can support PCIE SSD to boot. Windows Server 2012 R2 and latest OS have drivers for NVMe SSD. If using older OS, you must install the driver provided by the SSD vendor. Support: 2.5" U.2 SSD(CFF-8639)2.5" NVMe SSD Slots: U.2(CFF-8639)PCIe x4SATAPOWER SATA Gross size 200x130x33 mm Gross weight 86 g Contents Controller, 4 pcs screws