ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR HDMI 1 HP 2159m 21.5 inch Diagonal Full HD LCD Monitor, 21.5", 3 ms HP 2159m 21.5 inch Diagonal Full HD LCD Monitor. Display diagonal: 21.5", Response time: 3 ms, Native aspect ratio: 16:9, Viewing angle, horizontal: 160°, Viewing angle, vertical: 160° The Hp 2159m Display has full 1080p HD with Hdmi, Dvi-d, VGA and audio port. It also has built in speakers that are no visable, it has a glossy (with BrightView technology) 21.5” screen that is great for movies and all your day to day tasks. 5ms respon... https://www.pcmag.com/review/244702/hp-2159m Now that widescreen desktop displays are making the transition to the 16:9 aspect ratio, it should come as no surprise that monitor vendors are now offering full high definition capabilities on their smaller models. Enter the HP 2150m ($239.99 direc... Good color quality. Hi-res screen. Sharp text reproduction. Three video inputs. Backlight seepage. Some tinting. Weak grayscale performance. No USB ports. The HP 2159m is capable of displaying HD content in its native format and does a very good job of reproducing small fonts, but it has some minor backlighting and tinting issues....