Premium Performance:converting digital DVI signals to analog VGA signals; Integrated chipset improves the compatibility with more VGA displays. High Grage Video:HIGH QUALITY VIDEO - Supports HDTV resolution up to 1080p @60Hz and PC graphics resolutions up to 1920 x 1200 @60Hz Quick and Hassle-free- DVI-D to VGA setup, 25 pin DVI-D Male to 15 pin VGA Female. Easy to use:Just plug to play without installing any drivers. No external power supply required. This item will obtain power from the source device through dvi port.