Push down on the DIMM ejectors on each end of the DIMM, which slightly raises the DIMM out of the slot. Locate the DIMM(s) that you want to remove. Slide each lock to the left to unlock and open the DIMM covers. Before you can install memory, you might need to remove some of the DIMMs to match a supported configuration or to meet mixed capacity R-DIMM installation requirements.

Your Mac Pro ships with DIMMs preinstalled in some or all of the DIMM slots. Push in the top of the latches, then pull the latches to remove the access door. To avoid generating static, don’t move around the room until you finish installing memory and install the access door back onto the computer. Always discharge static before you touch parts or install components inside your Mac Pro.