5-Pack of USB 2.0 to VGA Multi Monitor Adapters/External Video Cards - 20.00cm (8.00in) long - offer external multi-monitor, high-resolution (up to 1920x1200) support for Windows computers through an available USB 2.0 port. They are a cost-saving solution for mirroring or extending your workspace onto a multi-monitor setup. These devices can be used with up to 4 additional (5 total) USB video adapters, giving you a robust, multi-monitor solution, all without needing to open your computer or invest in additional video cards. 5 pack of 20cm (8in) USB Video Adapter to fit your application needs USB 2.0 (A) to VGA for connectivity with ease Application and environment tested and guaranteed to work