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This PH22-sized USB3.0 header splitter converts one motherboard internal 19/20Pin USB3.0 female header into two external standard USB-A ports, an ideal accessory to expand PC chassis front-panel USB interfaces. Supporting full USB3.0 5Gbps bandwidth, it delivers rapid data sync for U disk, mobile hard drive and peripheral gadgets without speed downgrade. Compatible with most brand mainstream motherboards equipped with standard 19/20Pin USB3.0 onboard header, the compact mini structure greatly optimizes internal chassis cable arrangement, widely applied for DIY PC assembly, small case refitting and desktop front USB port upgrade. Adopted premium gold-plated contact design effectively avoids poor contact caused by oxidation, ensuring continuous stable daily use.