The U244-001-VGA USB 2.0 to VGA External Video Graphics Card Adapter displays video on a VGA monitor or projector via your computer or laptops USB 2.0 port. You can extend video from your primary display to another duplicate the same video on both displays or change the second display to your primary display. This adapter is an ideal tool for multitasking viewing large spreadsheets editing documents giving presentations at trade shows or watching movies and playing games on large screens.N/AN/AYou can add up to six U244-001-VGA adapterseach attached to its own USB 2.0 portto a Windows computer or up to four on a Mac. Adding or removing a monitor is easyno need to reboot the system afterward. No external power supply is necessary. First install the drivers using the included CD. Then connect the adapter to the display and the source using a VGA cable and the built-in USB 2.0 cable respectively. N/AN/AThe U244-001-VGA supports high-definition video resolutions up to 1920 x 1080 (1080p) @ 60 Hz and features 128 MB DDR SDRAM of memory. Compatible with 32- and 64-bit Windows 2000 and later 32- and 64-bit Intel Mac OS X 10.4 and later and Ubuntu 14.04.2. This adapter also works with Surface tablets running Windows 8 Pro or later.N/AN/AEasy to Add DisplaysN/AExtend video to a second monitor duplicate the same video on both monitors or make the second monitor your primary displayN/AIdeal for multitasking viewing spreadsheet data editing documents giving presentations watching movies and playing video gamesN/AAdd up to 6 adapters for a total of 7 displays (Windows)N/AAdd up to 4 adapters for a total of 5 displays (Mac)N/ANo need to reboot system after adding or removing a monitorN/APlug and playno external power supply neededN/AN/AVibrant Superior Video QualityN/ASupports high-definition video resolutions up to 1920 x 1080 (1080p) @ 60 HzN/AFeatures 128 MB DDR SDRAM of memoryN/AResumes automatically from hibernation and suspend modesN/AN/ABroad CompatibilityN/AWorks with 32- and 64-bit Windows 2000 and laterN/AWorks with 32- and 64-bit Intel Mac OS X 10.4 and laterN/AWorks with Surface tablets running Windows 8 Pro or laterN/AWorks with Ubuntu 14.04.2