The Acer KA220HQ bi 21. 5" widescreen LCD with LED-backlit display combines stylish functionality with amazing 1920 x 1080 resolution, allowing you to enjoy high-definition entertainment in the comfort of your home. Incredible 100, 000, 000: 1 contrast ratio and rapid 5ms response time highlight the advanced technology, but this display is as well. The KA220HQ bi LCD also features HDMI & VGA ports for greater compatibility, a Kensington lock slot to protect your investment, and energy star compliance to help you save money and energy.