YueYueZou&reg; 2-Port VGA Switch Bi-Directional Video Audio Switcher Box (HDDB15 + 3.5mm) for PC or Monitor Sharing or Switching Bi-directional switching: two PCs (or other VGA sources) to share one VGA display or one PC switching between two VGA displays. Provides up to 250MHz bandwidth for video clarity, Supports VGA resolutions up to full HD 1920x1080 and WUXGA 1920x1440. Auto-detect display DDC information for the optimal resolution. No External Power Supply Needed. Simple button switching and high quality metal enclosure; plug and play.