The USB2VGAE3 USB VGA Multi-Monitor External Video Adapter lets you add a high-resolution (1920x1200) external VGA output to your desktop or laptop computer, using an available USB 2.0 port.<br>A cost-effective solution for systems that lack the outputs required for a multi-monitor setup, this high-performance USB to VGA adapter can be used to mirror your primary display and show the same image on both screens, or extend your desktop to double your workspace.<br>This small form factor USB video adapter can be used with up to 4 additional (5 total) USB2VGAE3 USB video adapters, creating multiple VGA connections to add displays quickly and easily - all without having to open the computer case to add extra video cards.