I am preparing a poster presentation for a scientific conference. When I published my work, I was affiliated with institution X. After my publication, I moved to institution Y. Now, I want to put my affiliation on the poster as well as the institution logo. My question is simple. Which institution should I put on the poster, X or Y? Is it allowed to put both of them since this work was published with an affiliation X but now I am at institution Y? Your answers are appreciated.