Took me two minutes . . .
These say thay are for MACS some of them. I wonder if there is any difference. I think the standards for mini DP are the same for MAC as they are for Windows PC's
http://www.amazon.com/Cablesson-Mini.../dp/B00675Q2CW
http://www.overstock.com/Electronics...2/product.html
Cant vouch for the quality. Looks like they price out around $29 and they may not have the sound component. I dont know if displayport carries sound or not. You man not want sound for a power point.
Aparently from my reading I think some Apple/MAC computers have a lot of mini-displayport plugs on their equipment. I have seen some reviews of people that video cards with displayport and the adapter cords allow very clean pass-through. Some people have had cards with 2 DVI plus one displayport and they hooked up three monitors and you could not tell which one was using the displayport adapter cord.
I say to hell with the people from the standards committee for HDMI. Maybe they are just jealous and want to force everyone to use HDMI. Sometimes standards just dumb down products.