Library Guide Replace Components (CRUs & FRUs) Power Supply Removal and Replacement Install a Power Supply Slot Cover Install a Power Supply Slot Cover The filler covers an empty power supply slot. Position the cover with the spring fingers facing up. Insert the tabs on the right side of the cover into the power supply slot until the notch is near the module frame. Seat the cover notch against the module frame edge. Push the left side of the cover into the power supply slot.