Description

1. iMac12,2 with old graphics HD 6970M 1GB / 2GB,must buy new X-bracket for MAM3.0 type A. The old X-bracket can't fit.... Recommend the option "card+X-bracket"

2. iMac11,1/ iMac11,3 / iMac12,2 with the big 3-pipe heatsink, must mod the heatsink or buy "card+heatsink+X"

If you don't know how to mod, please contact me before placing order.

3. No need OpenCore for High Sierra.

4. Suggest OCLP (OpenCore-Legacy-Patcher) for Majave / Catalina / Big Sur / Monterey.

5. work with native High Sierra, need to fix brightness level. fix theapplebacklight.kext or contact me if you don't know how to do. Highly recommend OC / OCLP.

6. GPU Temperature Monitoring is available on when using both custom VBIOS and OpenCore. This shows the temps, but does not control the fans!Move the ODD sensor to the GPU heatsink, and use Macs fan control to set all the fans run in "full blast".