User`s manual

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Memory Hole
This setting allows the user to reserve the 1MB of memory required by some legacy
add-on cards.
DRAM Margin Ranks
This allows the user to enable or disable the DRAM Margin Ranks function.
Initiate Graphic Adapter
This setting allows the user to select which graphics controller to be the primary
graphic device when booting up.
IGD Graphics Mode Select
Allows you to decide whether to use the integrated GPU and select the amount of
memory used by the integrated GPU.