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This 21CM DC 5.5x2.5mm to USB-C charging cable supports up to 140W 7A high power output, perfectly compatible with USB-C laptops and mobile phones. Equipped with a smart LED display, it intuitively shows real-time voltage and current data during charging. It automatically adapts to multiple PD voltage levels including 5V, 9V and 20V to match different device power requirements. The short cord design saves space and avoids messy wiring, with built-in overvoltage, overcurrent and overload protection for safe stable charging. Plug and play, durable and portable for daily home, office and outdoor power supply scenarios.