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StarTech.com USB VGA External Dual or Multi Monitor Video Adapter - High Resolution Video Card
Compact USB powered adapter provides the easiest way add a secondary or additional display to your PC
Completely external device offers a simple upgrade solution saving the cost and hassle of upgrading the internal video card on your system
The ability to use multiple adapters up to five provides a scalable display configuration for future expansion
Optimal performance at 1680x1050 and ideal for use with 20 to 22 monitors or smaller
Easy installation
No power adapter required