Interface expansion: Converts the motherboard USB3 E 20P header to an IDC 19P slot to enable interface expansion, while adding convenience with external USB TypeA and TypeC connections for multiple devices. Broad compatibility and easy use: Plugandplay functionality provides efficient operation and strong compatibility with widely used motherboards, delivering an effortless user experience. Steady transmission and durable design: The 19pin dual USB expansion module offers steady transmission through a reinforced structure that minimizes interference and maintains connection quality. Simple setup and low wiring effort: Designed for quick deployment with minimal wiring complexity, this expansion adapter provides an intuitive solution that improves usability and saves time during installation. Practical use scenarios: Upgrade desktop systems with limited front USB ports by adding USBA and USBC connections for external drives, keyboards, mice, or USB hubs. Strengthen USB 3.x connectivity in workstations or media setups that require reliable speed connections for external storage devices or peripherals. Use in compact builds or creator PCs where expanding the internal USB header to support multiple external devices improves workflow without adding clutter.