Improves Your Computer or Server’s Performance and Storage CapabilitiesThis U.2 to PCI Express (PCIe) adapter connects a U.2 SSD or a 2.5-inch SATA SSD or HDD to your computer or server’s PCIe expansion slot. By converting a PCIe (SFF-8639) host interface, you can add terabytes (TB) of internal storage space and enhance your PC’s read/write speeds. The adapter is compatible with PCIe 3.0 motherboards. It is also backward compatible with earlier 2.0 and 1.0 versions.Add an Optional M.2 Adapter for Expanded FunctionalityThe PCE-U2-PX4 is compatible with P970-U2M2 U.2 to M.2 NVMe adapter (sold separately) to convert the PCIe expansion slot into an M.2 SSD module. Just Plug and Play with No External Power NeededUse the included 7-pin SATA cable to connect the PCE-U2-PX4 to the motherboard. No additional software or power is needed. The adapter is compatible with Windows (7 and higher) and macOS (High Sierra and higher).