ASROCK Z77 Extreme6 User Manual page 26

Step 2. Connect two Radeon graphics cards by installing a CrossFire Bridge on
the CrossFire Bridge Interconnects on the top of the Radeon graphics
cards. (The CrossFire Bridge is provided with the graphics card you pur-
chase, not bundled with this motherboard. Please refer to your graphics
card vendor for details.)
Step 3. Connect the DVI monitor cable to the DVI connector on the Radeon graph-
ics card on PCIE2 slot. (You may use the DVI to D-Sub adapter to convert
the DVI connector to D-Sub interface, and then connect the D-Sub monitor
cable to the DVI to D-Sub adapter.)
26
CrossFire Bridge
ASRock Z77 Extreme6/TB4 Motherboard
or