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/use-imac-as-monitor-with-target-display-mode-2260906-705215bd6f3940efbff05dc374e0a44d.png "How to Use Your Old iMac as a Monitor")
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iMac (21.5-inch, 2017) - Technical Specifications
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How To: 2011 MacBook Air to iMac as an External Display - YouTube
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