Watch to learn how to replace a UNB fan for Dell S5000 Series.
First, you need to remove the front bezel. Loosen the two screws on the front of the U box, and remove the bezel. To replace the fan module on the UNB board, press the white plastic pin down and remove the faulty fan out of the UNB module. Insert the new fan into the UNB module until you hear a clicking noise.
