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This PCI-E 4X expansion card adopts professional ASM3242 chipset, converting PCIe slot into USB 3.2 Gen2 Type-C female port with speed up to 20Gbps. It is compatible with standard PCI-E 4X interface of desktop motherboards, simple to install without complicated settings. It supports high-speed file transmission, external solid state drive connection and device fast charging, and is backward compatible with multiple USB protocols. With stable circuit structure and excellent heat dissipation performance, it is an ideal upgrade accessory for desktop computer to expand high-speed Type-C interface.