Lenovo ThinkVision L2440X, 61 cm (24"), 1920 x 1200 pixels, 5 ms, Black Lenovo ThinkVision L2440X. Display diagonal: 61 cm (24"), Display resolution: 1920 x 1200 pixels, Response time: 5 ms, Native aspect ratio: 16:10, Viewing angle, horizontal: 160°, Viewing angle, vertical: 160°. USB hub version: 2.0. Product colour: Black http://www.computeractive.co.uk/pcw/review/1919752/lenovo-l2440x Unlike conventional LCDs, which are backlit by cold-cathode fluorescent lights, Lenovo’s L2440X uses an array of LEDs.This means that it uses less power than similar displays and, being free of both mercury and arsenic, the L2440X is certainly green to... Great image quality; impressive green credentials, Expensive, A very good display, but expensive compared with some other 24in panels ...