Feature: 1. With a PD inductor chip, the type-C power supply can be converted into a notebook power interface for Lenovo series square interface. 2. Usually used for Lenovo THINKPAD series notebooks, the output interface is 19V-20V. When selecting the connection, we must pay attention to whether the voltage matches. Specification: Product Length: About 15 cm/5.9'' Input interface: Type-C Female Output interface: 11mm*4.5mm Square DC Male for Lenovo Thinkpad Product Material: All-copper conductor with PD inductor chip Input device: PD power adapter (input device power is larger than load power, to avoid power shortage, power load is too large, too much heat, which affects the life of the PD power supply). Output voltage: 19V-20V Output power: 90W Product color: black Gross weight: 12g Packing method: bag packing Packaging size: 15cm*10cm*1.5cm/5.9*3.93*0.59'' Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.