Interface expansion converts the motherboard USB3 E 20P header into an IDC 19P slot to enable interface expansion, while accommodating multiple devices through TypeA and TypeC connections for added convenience. Suitable fit offers plugandplay design for seamless integration, ensuring strong compatibility with mainstream motherboards and simplifying setup processes effortlessly. Smooth transmission rate features a 19pin dual USB expansion module that delivers steady transmission via a reinforced structure, reducing interference and sustaining connection quality. Simplified installation steps provide easy installation and simplified wiring, enabling quick deployment for seamless connectivity without complex configurations or technical expertise required, making it ideal for expanding your device's capabilities efficiently and effortlessly. Use scenarios: Expand USB ports on a desktop with limited connectors to support external drives, keyboards, mice, and USBC accessories without motherboard changes. Upgrade a compact or spaceconstrained PC (including HTPC or small form factor builds) to add reliable USB 3.x connectivity with minimal cabling. Reinforce professional workstations by providing stable, multiport USB access for external storage devices, audio interfaces, and other peripherals requiring dependable connections.