ASROCK Z77 Extreme11 User Manual page 53

Step 2. Connect two graphics cards by installing a CrossFire Bridge on
the CrossFire Bridge Interconnects on the top of the graphics
cards. (The CrossFire Bridge is provided with the graphics card
you purchase, not bundled with this motherboard. Please refer to
your graphics card vendor for details.)
Step 3. Connect a VGA cable or a DVI cable to the monitor connector or
the DVI connector of the graphics card that is inserted to PCIE1
slot.
CrossFire Bridge
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