Tripp Lite P134-06N-VGA video cable adapter 5.91" (0.15 m) DisplayPort VGA (D-Sub) Black

Connect a VGA monitor to a computer with a Displayport output
DisplayPort to VGA Active Cable Adapter - 1920x1200/1080P (DisplayPort-Male to HD15-Female) - 6 in.

Plug and Play - no drivers or setup needed
Supports PC video resolutions up to 1920 x 1200, and HD resolutions up to 1080p
Ideal for use with graphics cards that do not output Dual Mode (DP++) signals, such as AMD Eyefinity
Converts both Single-Mode and Dual Mode (DP++) Displayport output