Seth Christian @sethchristian • Joined Feb 2013 • Active 6 years ago Remove Connection Are you sure you want to remove from your connections? Timeline Profile Connections Photos Forums Points Leader Badges Discussions Replies Favorites Discussions Replies Favorites Forum Replies Created Seth Christian February 24, 2013 at 8:58 pm in reply to: Can’t get GTX 580 to display on my Mac Pro 2,1 I’m not sure what your 3rd power connection consists of. my GTX 580 only needs 2 connections, a 6pin and an 8pin. thats it. not sure if we’re talking about the same card. thanks for your thoughts though