High Speed 32Gbps/64Gbps Performance PCIe X4/x16 to U. 2 adapter card supports fast and stable NVMe SSD data transfer.; Direct U. 2 Interface Single protocol U. 2 connector design allows direct SSD installation without extra data cables.; Flexible Slot Compatibility Works with PCIe X4/x16 slot, also compatible with PCIe X8 and X16 slots for versatile use.; Durable and Reliable Build Quality materials and gold plated contacts provide long lasting performance and stability.; Wide OS Support Compatible with Windows 8, Windows 10, Linux, and macOS with plug and play installation, no driver needed.