Inquiry about American standard power cable

I’m a loyal Razer fan from China, and I plan to study in the United States in July. However, I bought the Chinese version Razer Blade 14 (2023), so it needs a change-over plug to charge my laptop. And I asked Chinese Razer customer service, they said the power adapters are the same. So I was wondering how I can get the American standard power cable so that there is no need to buy a change-over plug and it is more convenient for me. Thank you all.