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
IMac 2011 21,5" nVidia Quadro K2100M de segunda mano por 400 EUR en Malpartida de Cáceres en WALLAPOP
For Apple iMac 21.5" A1311 Mid/Late 2009 2010 2011 NVIDIA K2100M 2GB Video Card | eBay
Originale Radeon K610M K610 1GB N15M-Q2-B-A1 della Scheda Video grafica per iMac A1311 2010 2011 A1312 2009 2010 2011 anni di Prova di 100% OK - AliExpress Computer e ufficio
QUADRO K2100M 2GB Apple iMac 21.5-27 inch 2010 -2011 Models GPU UPGRADE EUR 207,14 - PicClick FR
APPLE IMAC 27"" A1312 NVIDIA QUADRO K3100M 4 GB MXM scheda video sostituzione 6970M EUR 122,98 - PicClick IT
2011 iMac 27″ K1100M Graphics Card Swap And Install Catalina – TuXxX Blog