Replace the power supply in your Mac Pro (2019)

Learn how to remove and replace the power supply in your Mac Pro.

Check required tools

If you need to order a replacement power supply, contact Apple.

Follow the steps to remove the housing on Mac Pro (2019) or the top cover on Mac Pro (Rack, 2019).

Shut down your Mac Pro.
Wait approximately 5-10 minutes for the computer to cool down.
Unplug all cables except the power cord from your Mac Pro.
Touch the metal housing on the outside of the Mac Pro to discharge any static electricity, then unplug the power cord.
Always discharge static before you touch parts or install components inside your Mac Pro. To avoid generating static, don’t move around the room until you finish installing the power supply and slide the housing back onto the computer.
Flip the top latch up, then twist left to unlock the housing.
Lift the housing straight up and off of Mac Pro. Carefully set it aside.

Shut down your Mac Pro.
Wait approximately 5-10 minutes for the computer to cool down.
Unplug all cables except the power cord from your Mac Pro.
Touch the metal housing on the outside of the Mac Pro to discharge any static electricity, then unplug the power cord.
Always discharge static before you touch parts or install components inside your Mac Pro. To avoid generating static, don’t move around the room until you finish installing the power supply and slide the top cover back onto the computer.
Slide the top cover release latches to the unlocked position, lift the top cover and pull it away from the front plate, then set it aside.

On clamp plates #1 and #3, unscrew all six Phillips #1 screws, then remove both clamp plates.
The screws are captive and stay attached to the clamp plate.
Remove one T8 screw from the power supply grounding bracket.
Grip both sides of the power supply and pull it out. If necessary, remove the MPX module above the power supply for easier access to the power supply.

Insert the new power supply in the bottom slot.
Push firmly and evenly until the power supply is fully seated. If you removed any MPX modules, reinstall them.
Reinstall the T8 screw back into the power supply grounding bracket.
Reattach clamp plates #1 and #3 and fully tighten the six Phillips #1 screws.

Follow the steps to reinstall the housing on Mac Pro (2019) or the top cover on Mac Pro (Rack, 2019).

Carefully lower the housing over the Mac Pro, being careful not to touch any of the circuit boards.
After the housing is fully seated, twist the top latch right and flip it down to lock it.
Top: Locked position (dots match)
Bottom: Unlocked position (dots do not match)
Connect the power cord, display, and any other peripherals.

Align the edge of the top cover with the slot in the front plate, then firmly press near the release latches and listen for them to click into place.
Connect the power cord, display, and any other peripherals.

If you received a replacement part from Apple, follow the steps to send your original part back to Apple.

Published Date: January 19, 2022