Biostar TZ77A - System Agent (SA) Configuration

TZ77XE3/TZ75XE3 UEFI BIOS Manual
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System Agent (SA) Configuration
Graphics Configuration
Primary Display
This item select which of IGFX/PEG/PCI Graphics device should be Primary
Display or select SG for Switchable Gfx.
Options: Auto (Default) / IGFX / PEG / PCI
Internal Graphics
This item keeps IGD enabled based on the setup options.
Options: Auto (Default) / Disabled / Enabled