I purchased a replacement fan (DF128010BM) for my Corsair One i160 because the original fan is making an annoying squeaky noise. However, I can’t manage to disconnect the original fan from the motherboard — the 4-pin connector will not disconnect no matter how hard I pull. Is it possible that the machine ships with the connector glued together? Any tips on how to disconnect the old fan without damaging the connector on the motherboard?