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This internal interface splitter adapter converts your motherboard idle USB 3.0 19Pin header into a usable USB 2.0 9Pin port, solving the mismatch problem between different generation front panel sockets. The connector adopts wear-resistant reinforced molding structure to prevent loosening, oxidation and poor contact after frequent use. Compact circuit board design occupies little space inside the case, supporting easy wiring layout for RGB fans, water cooling controllers and front USB panels. It maintains steady USB2.0 transmission performance with built-in anti-interference circuit, plug and play without extra drivers. Suitable for ATX, MATX and ITX motherboards, ideal for DIY PC builders to expand internal USB interfaces conveniently.