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About your iMac (Retina 4K, 21.5-inch, 2017) iMac18,2

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8GB to 32GB non-removable

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iMac (Retina 4K, 21.5-inch, 2017) iMac18,2

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iMac (Retina 4K, 21.5-inch, 2017) iMac18,2