gigabyte gtx 980 g1 displayport/monitor ???

[dwilson041781]

I want to add a 4th monitor, but my 4th monitor does not have a display port, can i use a displayport to dvi connection? does it have to be a passive or active displayport cable?

 

[RadXge]

Here is the general info

I think the choice between passive and active depends of the resolution
http://nvidia.custhelp.com/app/answers/detail/a_id/2967/kw/displayport