D-Link DSN-3400-10 - xStack Storage Area Network Array Hard Drive Hardware Reference Manual page 42

3. Remove the power supply module as shown in Figure A-21.
4. Insert the new power supply module by reversing the previous steps. i.e. Insert the
new power supply module into the bay until it seats against the rear and the lever
locks. Then screw the locking bolt into place.
42 Appendix A Replacing and Upgrading FRUs
Figure A-21 Remove the Power Supply Module