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This PCIe to USB 3.0 expansion card adopts standard PCI-E X1 interface, which is compatible with all PCIE slots of desktop computers. It can quickly expand 4 independent USB 3.0 ports to meet the connection needs of U disk, mobile hard disk, printer, fan and multiple external devices. Adopting self-powered power supply solution, it avoids insufficient power supply and ensures stable data transmission. With low-profile bracket, it is suitable for thin and small case installation. Intelligent safety protection design prevents short circuit and overload damage. Simple installation, no complicated settings, perfectly compatible with mainstream Windows systems, is an essential accessory for upgrading desktop computer expansion capacity.