Foxconn FlamingBlade GTI User Manual page 122

Click "Advanced Settings" from the dialog box.
Select the NVIDIA GeForce tab, then click
"Start the NVIDIA Control Panel".
2. When using two graphics cards:
Select "Set SLI Configuration", then
click "Enable 2-way NVIDIA SLI",
when done, click Apply to enable it.
Select the "3D Setting" tab and enable
the "Show SLI Visual Indicators" item.
When using two graphics cards:
Just select "Set SLI Configuration", then
click "Enable SLI" and set the display,
when done, click Apply.
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