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Dell OptiPlex Desktop Computer PC w/RGB Lighting, Ultra-Fast Intel i5 Quad-Core, 8GB RAM, 500GB SSD, DVD-RW, Windows 10 Home, WiFi, Includes 24" Monitor and Periphio 4-in-1 Kit - Walmart.com
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A Reference Guide to the Dell OptiPlex Diagnostic Indicators | Dell US
Dell Diagnostic Lights 1 and 3 on an Optiplex 790 Error Code Memory Bad - YouTube
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