The Intel® Embedded Graphics Drivers allows multiple configuration sets for OEMs who want to use the same emgd.reg file across different platforms. There can be up to 16 instances of configurations. The registry key described in the previous section, ConfigId, ensures the display driver selects the right instance. Each instance may contain multiple groups of per-config and per-config+per-port platform customizations.
The configuration sets are defined in the registry tree as
[HKEY_LOCAL_MACHINE\Drivers\Display\Intel\<platform>\<config id>],
Where <config id> is the configuration number. The “ConfigID” key described in the previous section selects the active configuration set.