StarTech.com DisplayPort to DVI Adapter - Active Conversion - 1920x1200 - DP to DVI Single Link Converter for DVI-D Display (DP2DVIS) - DisplayPort adapter - 20 cm

Connect a DVI monitor to a single-mode DisplayPort output from your computer
The DP2DVIS DisplayPort to DVI Active Single Link adapter lets you connect your DisplayPort video source (desktop PC, laptop, etc.) to a DVI-D monitor, projector or display, including televisions and Apple Cinema Display HD, eliminating the expense of having to upgrade to a DisplayPort-capable monitor.
Unlike passive adapters, this DP to DVI converter offers an active conversion for use with any DisplayPort output - ideal for graphics cards that are not capable of outputting multi-mode DP++ signals (e.g. ATI Eyefinity). Supporting resolutions up to 1920x1200, this compact device provides a simple solution for converting DisplayPort output for compatibility with existing DVI monitors, televisions or projectors.
Backed by a StarTech.com 3-year warranty and free lifetime technical support.