LG Electronics 20M37D-B 20-Inch Screen LED-Lit Monitor Display Area: 20" (19.5" Measured Diagonally) Brightness: 200 cd/m2 Contrast Ratio: 600:1 (Typical),5,000,000:1 (DFC) Max Resolution: 1600 x 900 Interface:1x DVI-D Port, 1x VGA Port