2013 iMac teardowns reveal SSD slots, soldered-in CPU in the 21.5” model | Ars Technica
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How to Speed up your iMac with a NVMe 960EVO M.2 SSD - YouTube
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Flexx LX345 NVMe SSD Upgrade Solution kit For select 27 and 21.5-inch iMac Late 2013 - 2019 | Facebook
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Apple Genuine 661-7456 Solid State Drive (SSD) PCIe 128GB for iMac 21.5 inch 27 Mac mini Pro MacBook Air 11 13 15
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128GB FUSION DRIVE PCIe SSD Apple iMac 21.5" A1418,27" A1419 Late 2013,2014,2015 | eBay
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