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This 21cm conversion cable adopts 5.5x2.1mm DC jack input and USB-C male output. It delivers up to 140W PD fast charging with multi-voltage compatibility of 5V, 9V, 20V and max 7A current. The smart LED screen clearly shows real-time voltage and current data for easy charging status check. Premium internal wiring ensures stable and efficient power transmission, with overvoltage, overcurrent and short-circuit protection for safe use. Compact and portable design is perfect for powering USB-C laptops, mobile phones and other PD-enabled devices anytime.