the one that i se plug it is a fan or not usualy fan pins are not made this way these are fan connectors picture https://www.google.ca/search?q=3+pins&tbm=isch&tbo=u&source=univ&sa=X&ei=CqmzUrmLMab7yAGYhICoDw&ved=0CDQQsAQ&biw=1920&bih=974#q=3+pins+fans+connector&tbm=isch