Acer B7 23.8'' Monitor has a Full High Definition IPS display with a screen resolution of 1920 x 1080. In-plane switching technology is used that offers a detailed and vibrant viewing experience with a 75Hz refresh rate. The number of USB ports is 5 and its primarily used for home purposes. The aspect ratio is 16:9 and the contrast ratio is 1000:1. You can also access VESA mounting standard 100x100 VESA mount pattern with this monitor. It has in-built HDMI and VGA video inputs with 2 HDMI ports. The response time of this monitor is 4ms and the brightness is 250. It comes with 90-day Limited Warranty.