ASROCK 939SLI32-ESATA2 User Manual page 19

E. From the Display Properties dialog box, select the Settings tab then click
Advanced.
F. Select the NVIDIA GeForce tab.
G. Click the slider to display the following screen, then select the SLI
multi-GPU item.
H. Click the Enable SLI multi-GPU check box.
I. Click OK when done.
TM
* SLI appearing here is a registered trademark of NVIDIA Technologies Inc., and is used only
for identification or explanation and to the owners' benefit, without intent to infringe.
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