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This PCIe to USB3.0 expansion card is engineered for regular Intel and AMD desktop computers to expand abundant USB ports. Equipped with seven independent USB 3.0 interfaces, it delivers up to 5Gbps super speed for external hard drives, flash disks, cameras and other USB peripherals. Adopting bus-powered structure, it acquires working power from motherboard PCIe slot so no extra power cord is needed for installation. The card is plug-and-play after driver installation, compatible with all PCIe slots including X1, X4, X8 and X16, and works seamlessly on Windows 7/8/10/11 and multiple Linux systems. It is backward compatible with legacy USB 2.0 and USB1.1 devices to maximize your existing peripheral utilization and solve insufficient onboard USB port troubles effectively.