I know this has already been asked, but I still find all the configurations hard to understand being a complete noob.
I currently have 2 monitors attached like this:
- DVI(monitor)->DVI-to-miniDisplayPort converter (passive, I think)
So off I went and got another passive dongle for a 3rd monitor and plugged it into the spare miniDP and of course it didn't work. That cost like 25 quid and is non-refundable. Arghh.
So before I spend anything more, do I simply need an "active" DVI-to-miniDP dongle for this to work? Or is it that I'm using the two DP inputs, and should be using DVI->HDMI instead?
Thanks in advance