Review on Gold-Plated Mini DisplayPort to DVI Adapter - Thunderbolt Compatible, Male to Female Connector | Ideal for MacBook Air/Pro, Microsoft Surface Pro/Dock, Monitors, Projectors, and More by Amber Dixon

I got this to replace the DVI port with a mini DisplayPort after the new GPU card had different connectors. On the new AMD R9 280X GPU, the Sapphire version featured 1 DVI, 2m-DP and 1 HDMI. If you're using this for a triple monitor, this adapter worked to set up 2 monitors, but as soon as I connected a 3rd to the card, the one with this adapter turned itself off. As it turns out, to set up 3 monitors from a single AMD R-series card, all adapters must be "active" dual-channel to tell the GPU that the devices are discrete. clone screen from laptop to TV or external monitor/projector. It also works for dual displays running invisibly (separate screens, no image cloning) from a single GPU card. However, to set up three or more monitors from a single card on a desktop workstation, you must use an "active" adapter. Not that. Knowing that, the adapter here worked perfectly for what it was designed for. It's just not what I need. I keep this to myself as it's great for mirroring my laptop to a TV and HDMI/DVI projector.