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This internal motherboard USB3 header extension cord lengthens short original onboard 20Pin port to reach distant chassis front I/O bracket conveniently. It fully conforms to USB3.0 Gen1 specification to satisfy daily high-speed file transfer and peripheral power supply needs. Moderate fixed length avoids redundant messy wiring inside computer case. Direct plug-and-play installation without driver required, a practical replacement accessory for desktop assembly and case refitting.