What is the tip size for charging

I have a GAN Charger that provides enough power for Laptop. I need to purchase a cable to fit. What size is the tip for charging the AeroBook example 4.0 x 1.7 mm / Tip I

You need to look for 12V

i understand the voltage, what size is the tip that fits in the laptop?? outside diameter and inside diameter pin to fit??? review the photo I sent please. not every 12 volt fits the aero book? it is not marked on the charger or in any of your specifications.

Outer diameter 3.5 mm, inner diameter 1.5 mm