Slim and lightweight.
The Lenovo ThinkVision LT1421 portable USB-powered monitor makes for a great addition to your travel bag with its slim profile, included cover, and straightforward, one-cable connection. The monitor performs best as a secondary display for email, text, and reference material, though I wouldn't rule out sneaking in the occasional video while you work on your main screen.
Relatively expensive due to lack of competition.
If you fancy a portable 14in USB monitor to use as a secondary display together with your laptop - or even as a primary with a netbook - for increased productivity or presentations, the ThinkVision LT1421 is a good choice. Thin, compact and light enough to fit in a messenger bag alongside your laptop, this 1kg screen features durable build, decent image quality, and it's all powered over a single USB port thanks to the magic of DisplayLink.
Portable, easy to set up.
Lenovo's ThinkVision LT1421 is a great dual-monitor solution for laptop users. It's light and easy to carry and draws all its power from your laptop's USB port. Its picture quality isn't great, but that's not the main selling point of the unit -- it's meant to provide great convenience for those of you who need to work with extra screen real estate while on the road.
Displays bright colors and deep blacks.
Given its excellent performance, I highly recommend the ThinkVision LT1421 to business travelers and power users. It's light enough not to make a huge difference in your travel bag and won't require an extra case or burden you with many more cords. The $199 price tag is reasonable, considering the benefits.
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