Before replacing the DFM, you need to remove the front bezel of the module. To do this, you need to press the blue button on the right side, put your finger into the hole to the left of the button, and pull out the plastic bezel from its position. To release the DFM, pull the lever on top of the DFM.
Pull the lever to the left to release the DFM and then pull towards you to guide the DFM module out of the module. Insert the new DFM module. Fully insert the lever on top of the DFM. Move the disks or dummy cages from the original DFM module into the new DFM module. Remount the bezel
