Dell 4K S2817Q 28" Screen LCD Monitor Experience extraordinary Ultra HD 4K clarity with over 8 million pixels of screen content than Full HD resolution. Enjoy smooth and blur-free images while viewing sports and movies, as well as minimum input lag while playing games with its extremely rapid 2ms panel response time. View content and multi-task from two different sources with Picture in Picture and Picture by Picture features.Voltage Required:AC 120/230 V (50/60 Hz) Powerful dual 9W integrated speakers complete your home theater experience with crisp and rich audio. View content from two different sources simultaneously on one large monitor screen. Simply plug in your MHL compatible tablet / Smartphone via HDMI/MHL and your laptop visa DP/mDP.. NOTE - This product is not VESA compatible.