Nvidia 754 - Manual (Page 23)

Installation
Page 3-7
Š After installing VGA driver, enable the Multi-Graphics Processor
Unit (GPU) feature in the NVIDIA nView properties as shown below.
Š For SLI Mode, as "SLi Bridge" card (D)
must be installed to the golden fingers
(E) on the top of both VGA cards in
order to link the cards together.
Š For a single VGA in Single Mode, the
"SLi Bridge" card is not necessary.
D
E
<Figure 10>
<Figure 11>