Lenovo offers the USB-to-DVI Monitor Adapter that allows users to add multiple HD resolution monitor easily by simply plugging into a USB port. Based on DisplayLink technology, Lenovo’s USB-to-DVI adapter supports 1920×1080 native Full HD output.
The USB-to-DVI support plug and play without the need of reboot. Connected monitor can be configured for landscape “horizontal” or portrait “vertical” viewing for 90°, 180°, and 270° image rotation. A DVI-to-VGA adapter is included so you can also connect your old VGA monitor.
The Lenovo USB-to-DVI Monitor Adapter requires on external power. It supports Windows XP and Vista 32/64bit. The adapter is available for $129.00.