With support for up to 1920 x 1200 resolution and Thunderbolt technology, this Insignia™ NS-PD94591 adapter makes it easy to connect your computer's mini DisplayPort output to devices with a single- or dual-link DVI input.
I bought this to use with my Apple MacBook Pro which supports multiple monitors up to 30" (I think). Apple cable was about $5 more so I bought cheaper one. I plug everything and I found it only works when I set to to mirror the monitor. What I wanted to do is to use external monitor and my laptop together so I can put all the menu windows in one and actual working document in the other. I tried it with Apple cable which is the basically the same, it works perfectly. I guess you get what paid. Don't bother getting this one.