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The PCI vendor and device IDs are listed in ioreg. (e.g., ioreg -l -p IODeviceTree). For me, it's vendor_id=86800000, device_id=62010000 (vendor 8086, device 0162). "AAPL,ig-platform-id" is a device property set for the integrated GPU device. Setting a device property can be done by creating a "device-properties" string placed in org.chameleon.Boot.plist as in the post you quoted (the string is a plist with the property assignment encoded inside), or it can be done by the GraphicsEnabler code (one possibility is using the patch I posted here: http://blog.stuffedcow.net/2012/07/intel-hd4000-qeci-acceleration/). The two methods are equivalent.