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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
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2011 iMac Graphics Card Upgrade | Page 291 | MacRumors Forums
iMac 21.5" A1311 Mid/Late 2009 2010 2011 upgrade NVIDIA K2100M 2GB Video Card | eBay
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2011 iMac Graphics Card Upgrade | Page 236 | MacRumors Forums
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nVIDIA Quadro K2100M 2GB MXM Metal Video Card for iMac 11,1 / 11,2 / 11,3 / 12,1 / 12,2 A1311 A1312 Late 2009 / Mid 2010 / 2011 - AliExpress
