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Model PH743 adapter converts motherboard USB3.2 Type-E 20Pin internal header to traditional USB3.0 19Pin female header, perfectly matching case front panel cables equipped with USB-A + USB-C dual ports. When paired with 19Pin-to-Type-C front cable, Type-C port runs full-speed USB3.2 while reverse side works USB2.0; matched with dual-Type-A front wire, one USB-A for USB3.0 and another for USB2.0 to fully utilize header pins without waste. Made of high-strength black plastic housing and premium phosphor bronze gold-plated terminals, widely used for DIY PC assembly, chassis front USB upgrade and old motherboard Type-C port expansion renovation.