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This PH22C USB3.0 adapter turns a single motherboard internal 19/20Pin USB3.0 header into dual USB-A female ports to upgrade your PC front panel interface. Fully compliant with USB3.0 protocol at 5Gbps transmission speed, it works smoothly with USB flash disks, portable SSD and other external USB devices. Mini compact design optimizes internal cable arrangement, perfectly applicable for DIY PC building, small chassis renovation and desktop front USB expansion. Gold-plated contact pins effectively avoid poor contact from oxidation and rust, supporting stable daily continuous use for all common brand motherboards with standard 19/20Pin USB3.0 onboard header.