Belkin Display Port to 2x VGA + 3.5 mm Splitter Dongle (F2CD070), Not Compatible with Surface Pro 3 tablets & Pro 3 docks, MacBook Air 10.8 or Newer Versions Extends an Display Port equipped desktop/laptop to 2 VGA display monitors with 3.5mm audio Supports Video Resolutions up to 1920x1200 No Drivers needed, plug & play simplicity No external power adapter needed Converts digital Display Port video into analog VGA video and 3.5mm audio format Works on monitors 22 inches or smaller Extends a Mini Display Port equipped desktop/laptop/MacBook to 2 HDMI display monitors. This product is not compatible with Microsoft Surface Pro 3, MacBook Air 10.8 or newer versions. The Splitter Dongle will only mirror both screen monitors if used with incompatible devices