Asus P8Z77-V PRO/THUNDERBOLT - Manual (Page 174)

5-4 Chapter 5: Multiple GPU technology support
Chapter 5
5.1.5 Installing four CrossFireX™ graphics cards
1. Prepare four CrossFireX-ready graphics cards.
2. Insert the four graphics card into the PCIEX16 slots. Refer to Chapter 2 in this user
manual for the locations of the PCIEX16 slots recommended for multi-graphics card
installation.
3. Ensure that the cards are properly seated on the slots.
4. Align and firmly insert the four
CrossFireX bridge connectors to the
goldfingers on each graphics card.
Ensure that the connectors are firmly
in place.
5. Connect four independent auxiliary
power sources from the power supply
to the four graphics cards separately.
6. Connect a VGA or a DVI cable to the
graphics card.