StarTech.com DP2VGAMM15B 1920x1080 - Active DisplayPort to VGA Cable - 4.6m (15ft) - Black

The DP2VGAMM15B 15ft active DisplayPort to VGA converter cable lets you connect your DisplayPort-equipped desktop or laptop directly to a VGA monitor or projector at a longer distance than a standard-length cable would support, while saving the expense of additional adapters.

Plus, because the converter cable supports video resolutions up to 1920x1200 you can convert a DisplayPort video source to VGA without sacrificing video quality.