HP AMD MXM FirePro W5170M 2GB / R9 M375X GDDR5 For Dell Precision 7510 7710 iMac
The AMD Radeon R9 M375X is a. In case you have a working system before changing the card just run OLCP, select the proper MXM GPU type to AMD (GCN) and build and install OpenCore to your system and reboot.