MSI MPG X299M GAMING EDGE AC Quick Start Manual page 34

If you install a large and heavy graphics card, you need to use a tool such as MSI
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Gaming Series Graphics Card Bolster to support its weight and to prevent deformation
of the slot.
When adding or removing expansion cards, always turn off the power supply and
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unplug the power supply power cable from the power outlet. Read the expansion
card' s documentation to check for any necessary additional hardware or software
changes.
Installing SLI graphics cards
For power supply recommendations for SLI configurations, please refer to the user
guide of your graphics card to make sure you meet all the system requirements.
To install SLI graphics cards:
1. Turn off your computer and disconnect the power cord, install two graphics cards
into the PCI_E1 and PCI_E2 slots.
2. Connect the two cards together using the SLI Bridge Connector.
3. Connect all PCIe power connectors of the graphics cards.
4. Reconnect the power cord, power up the computer and install the drivers and
software included in your graphics card package.
5. Right-click the Windows desktop and select NVIDIA Control Panel from the menu,
click on Configure SLI, Surround, PhysX in the left task pane and select Maximize
3D performance in the SLI configuration menu, and then click Apply.
34
Overview of Components