This PCIe x16 adapter card converts desktop/server PCIe 3.0 expansion slot into U. 2 SFF-8639 interface, compatible with all standard 2.5 -inch U. 2 NVMe and U. 2 SATA solid state drives. It perfectly matches mainstream enterprise U. 2 models including Samsung PM953 and Intel U. 2 SSDs, delivering complete PCIe 3.0 high-speed bandwidth without performance limitation. Optimized high-frequency PCB layout effectively suppresses signal crosstalk during long-hour heavy-load data transmission.