The QDA-UMP4 M.2 2280 to 2.5" U.2 NVMe PCIe 4.0 SSD Adapter helps to potentially save on costs without compromising performance by allowing you to install a separately sold M.2 PCIe 4.0 x4 solid-state drive into a 2.5" U.2 (SFF-8639) drive bay. Made from aluminum alloy with thermal pads, this enclosure is designed to efficiently dissipate heat while taking advantage of the PCIe 4.0 x4 bandwidth to deliver up to 5381.8 MB/s read and 2423.8 MB/s write speeds. No additional software drivers are required, and the adapter is backward compatible with PCIe 3.0 M.2 and U.2 devices. The QDA-UMP4 is designed to work with Windows, Linux, and select QNAP NAS systems.