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This PCIe X4 USB expansion card is built with reliable ASM3142 and VL822 control chips, expanding your desktop with 2 USB-C and 3 USB-A Gen2 ports reaching up to 10Gbps transfer rate. It fits all PCIe X4, X8, X16 slots on Intel and AMD mainstream motherboards to upgrade insufficient original USB interfaces. Fully downward compatible with older USB versions, the card smoothly connects external SSD, high-speed mobile disk, cameras and other high-power USB accessories. Compatible with common Windows and Linux operating systems after driver installation, perfect for data backup, file transmission and daily peripheral expansion.