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Upgrade memory on your Mac
If your Mac comes with configurable memory slots—such as some models of Mac mini, iMac, or Mac Pro—System Information provides a simple diagram of the memory slots that are in use or available to configure, and easy access to instructions about how to upgrade the memory.
Open System Information for me
Choose Apple menu > About This Mac, then click Memory.
For instructions on how to upgrade or add memory, click Memory Upgrade Instructions.