Specification: Item Type: Laptop Charging Cable Material: Litz Wire, Tinned Copper Power: 20V/5A 100W Input Interface: TYPE-C Male Output Interface: Round 3.0 x 1.1mm / 0.19 x 0.04in DC Plug (Outer Diameter 3.0mm / 0.19in, Inner Diameter 1.1mm / 0.04in) Dual Chip: PD Chip, E-mark Chip Length: 0.5m/1.5m Cable Tie: Yes Package List: 1 x Laptop Charging Cable Note: This is the adapter plug converter cable that connects to the laptop via USB Type?C. You need a Type?C adapter or power bank to support it. But the Type?C adapter or power bank should have enough power (wattage) to charge the laptop. Please make sure that the wattage (volts and amperes) of the Type?C adapter is not lower than the input of the laptop (you can check it on the bottom of the laptop). For example, your laptop input is 19.5 v3.33a 65w, then your Type?C adapter should not be less than 65w, otherwise it will not work properly. Some customers often use their USB phone adapters to charge their laptops, but the power is very small and of course it does not work. Please note that not all Type?C adapters are suitable for your laptop.