![Quadro K2100M K2100 GDDR5 2GB Video Graphics Card N15P-Q3-A1 For iMac A1311 2010 2011 A1312 2009 2010 2011 years 100% Test OK - AliExpress Quadro K2100M K2100 GDDR5 2GB Video Graphics Card N15P-Q3-A1 For iMac A1311 2010 2011 A1312 2009 2010 2011 years 100% Test OK - AliExpress](https://ae01.alicdn.com/kf/H4a3978635ed448fc8b7c9af4bbe18137z/Quadro-K2100M-K2100-GDDR5-2GB-Video-Graphics-Card-N15P-Q3-A1-For-iMac-A1311-2010-2011.png)
Quadro K2100M K2100 GDDR5 2GB Video Graphics Card N15P-Q3-A1 For iMac A1311 2010 2011 A1312 2009 2010 2011 years 100% Test OK - AliExpress
![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 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](https://ae01.alicdn.com/kf/Sf0ed894b50204d9ea4be9577530c7f5fn/nVIDIA-Quadro-K2100M-2GB-MXM-Metal-Video-Card-for-iMac-11-1-11-2-11-3.jpg)
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
![Amazon.com: NVIDIA Quadro K2100M 2GB Video Card GPU Upgrade for Apple iMac A1312 A1311 2009 2010 2011 : Electronics Amazon.com: NVIDIA Quadro K2100M 2GB Video Card GPU Upgrade for Apple iMac A1312 A1311 2009 2010 2011 : Electronics](https://m.media-amazon.com/images/I/41WKbCVArmL._AC_UF894,1000_QL80_.jpg)
Amazon.com: NVIDIA Quadro K2100M 2GB Video Card GPU Upgrade for Apple iMac A1312 A1311 2009 2010 2011 : Electronics
![Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts : Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts :](https://m.media-amazon.com/images/I/61kZaXJwLkL.jpg)
Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts :
![iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium](https://miro.medium.com/v2/resize:fit:1400/1*SrrheGYtuFqZZPGQIZ9PFA.jpeg)
iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium
![Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts : Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts :](https://m.media-amazon.com/images/I/61kZaXJwLkL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Valley Of The Sun 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement Repair Parts :
![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 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](https://preview.redd.it/xhgttch88b161.png?auto=webp&s=a682d0ac5bb5ea2aee0b30ce7aa79e946dc59be0)