Features Include: Supports Multi Monitor Mode Perfect for Laptops and Desktops Lightweight and Portable Landscape and Portrait viewing USB for Power and Video (no video card required) PC and MAC Compatible Supports a variety of Applications Multiple Monitor Solution Multiple Monitors are a productivity solution and adding a second or third monitor to your computer has never been easier. Simply connect our Smart USB Monitor via a USBPort and run the installation software. That is it. The DoubleSight DS-12U utilizes USB for both power and video. No additional video port, video cable or power adapter required. The DS-12U ships with an adjustable stand for a custom view, including both Landscape and Portrait viewing modes. Perfect for: Exporting Tool Bars and Menus Monitoring Email and viewing Calendars Instant Messenger or Internet Phone Applications Watch Movies and Internet Video View PC based Photo Albums Laptop Users DoubleSight's new Smart USB Monitors are the perfect Laptop accessory. Easily expand your viewable workspace where ever you are. The DS-12U weighs one pound and conveniently tucks into your briefcase to go with you. The adjustable stand removes quickly when traveling. Netbook Users Double the amount of visible work space and increase your productivity, at home or on the road. The DS-12U does not require an extra video port and drivers are easy to download from our web site. Expanding your view has never been easier. Desktop Users Perfect for increasing your viewable desktop where space is tight.Since an additional video port is not required, our USB Monitors are perfect as a second or even a third monitors. DoubleSight's Display Link Software will allow you to connect up to six Smart USB Monitors to your existing PC.