How to Add Memory to Your Mac Pro 2019First, read the documentation to identify the optimal slots for the DIMMs you’ll be installing. Shut down your Mac Pro and wait at least 10 minutes for it to cool down. Make sure the Mac Pro is completely cool before you open it. Unplug all external cables except the power cord, then touch the metal casing to discharge any static electricity before you unplug the power cord. To open your Mac Pro, lift the latch on the top and turn it 90 degrees to the left.Now lift the housing straight up and off the Mac Pro and set it to the side. Slide this DIMM cover latch to the left to unlock the cover over the upper set of DIMM slots. Remove the cover by pulling it out from the left side and set it aside. Unlatch and remove the cover over the lower set of DIMM slots, too.Now open the DIMM ejectors on either side of the DIMM slots you’re using. To remove a DIMM, grasp it by the edges and pull it straight out. Always be careful not to touch the golden contacts on the back of a DIMM.Suggested Reading: How to Add Extra Graphical Power to your Mac Pro 2019Install your new memory in your Mac Pro by carefully aligning the DIMMs with the optimal slots, then pushing them firmly into place. Be sure to push them all the way in with even pressure on both sides. You’ll know the DIMM is installed when the DIMM ejectors click closed. To replace the DIMM covers, position the right side of the cover over the DIMMs, then push down on the left side of the cover until it clicks into place.Replace the Mac Pro housing, turn the latch 90 degrees to the right, and lay it down flat. Now plug the Mac Pro back in, reconnect the cables, and press the power button to start it up. If the status indicator light near the power button flashes amber, that means your Mac can’t startup. You may have mixed DIMM types or speeds, or the DIMMs may not be seated properly.Once you’re up and running, select About This Mac from the Apple menu to confirm that your Mac Pro has the correct amount of memory. If the DIMMs are installed in the wrong slots, you’ll be notified by MacOS. And that’s how you install memory in your Mac Pro. You can also follow this official video tutorial to install memory to your Mac Pro.
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