This AcBel SP50A36160 450W SFX Power Supply Unit appears to be in very good condition. We have used the paperclip test to test the fan which does come on when powered. This is stated as we do not have a desktop pc to test this unit otherwise. See photos for detail.Feel free to ask any questions. Smoke-free home. SHIPPING: I can only ship Monday through Friday. RETURNS: Are always accepted if the description is mistakenly inaccurate.