Tripp Lite's P137-06N-VGA Mini-Displayport to VGA Adapter allows you to connect a Mac or PC with a Mini-Displayport output to a VGA monitor. Compatible with the Thunderbolt port on Mac computers. Supports computer video resolutions up to 1920 x 1200, and HD resolutions up to 1080p. Fully-molded ends ensure long life enjoyment. It features a simple plug and play design with an integrated chip that converts the digital Mini-Displayport signal to analog VGA; no drivers or setup needed. Simply plug the adapter into your Mini-Displayport source and connect your VGA cable between it and your monitor. Unlike passive adapters, Active adapters convert both Single-Mode and Dual Mode (DP++) DisplayPort output. It is ideal for use with graphics cards, such as AMD Eyefinity, that do not output Dual Mode (DP++) signals.