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This 3-piece USB-C smart tester adapter features a built-in digital LED display, clearly showing real-time voltage, current and fast charging working status. It supports 10Gbps high-speed data transmission while enabling accurate charging parameter monitoring and protocol detection. Converts Type-C female to standard USB-A 8P interface, compatible with mainstream fast charging devices, phones, tablets and power banks. Compact all-in-one design requires no setup, ideal for charging speed testing, power supply parameter checking, daily data transfer and DIY electronic detection.