I want to buy a spare AC adapter for my LapBook Pro. The specs on the one that came with the laptop are 12V, 2A, 24 W. I bought a generic adapter that was 65 W with varying voltages and amperages. But it didn’t work. And I can’t find a Chuwi AC adapter anywhere. Is there something specific I need to look for in an AC adapter? Is there a brand or type known to work with Chuwi laptops?