Lenovo ThinkVision LT1421 portable monitor Summary: This thin, light display is perfect for tossing in a computer bag to work with a two-monitor setup while on the go. By James Kendrick | September 27, 2011 -- 06:13 GMT (23:13 PDT) Follow @jkendrick Previous | Next Image 3 of 9 The laptop controls all aspect of the display, There is a physical brightness control shown here. Topics: Lenovo, CXO, Hardware Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.