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Big Sur on iMac 27", Mid 2011, flashed 4GB NVIDIA Quadro K4100M by Nikey22, having issues with screen brightness, any ideas? Brightness control was working with Catalina Patcher, after installing Big Sur
2011 iMac 27″ K1100M Graphics Card Swap And Install Catalina – TuXxX Blog
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Apple iMac A1312 A1311 2009 2010 2011 NVIDIA Quadro K2100M 2GB Video Card GPU (#303898395295)