My contract is through Upwork, and I have been working as a web developer for the same company for the last three years. I also attached a cover letter along with an employment confirmation letter from my employer, stating that I am allowed to work remotely from Thailand.
Thank you for your response. Actually I'm a web dev, I might need to do some remote support for my clients during my stay. Not sure what I do in this case if they ask about my two laptops.