Features: This is just a conversion device, you need to provide the correct power output device, your computer device can work normally. This adapter is plastic material to provide more efficient thermal radiation, so you don’for t have to worry it will hot-up quickly. For square interface socket to Type-C USB C power adapter charger adapter Output: 45W maximum (5V3A, 9V3A, 12V2A, 15V2A, 20V2.25A 5 voltage ranges are automatically adjusted) Small size, easy to carry,perfect for traveling, school teaching. Function: Used for aging test, the square port is for output(connect laptop), Type -C for input port, can not insert reverse. Note: This product can not be used for phone, and can only be used for computer with PD port, otherwise item can not be charged. Please note this point before purchasing Specifications: Size : approx 5.1x2x1cm/ 2.0x0.79x0.39in Input interface: Type-C. Input Voltage: 10.5v-32v Output Power: 45W maximum Output interface: Large Square Interface Package Includes: 1 PC x Adapter note: If the interface is reversed, the product will not work properly. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.