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This PCIe to 4-port USB3.0 expansion card efficiently supplements insufficient built-in USB ports on desktop PCs. Featuring SuperSpeed USB3.0 standard with peak 5Gbps data speed, it handles external hard drives, flash drives and digital devices smoothly. Compatible with all PCIe slots from X1 to X16 for Intel and AMD platforms, the card supports backward connection of USB2.0 and USB1.1 devices. Widely applicable for home, office and DIY computer upgrading with stable performance and simple setup.