Specifications Summary >> Refresh Rate: 100Hz. Lenovo ThinkVision S27-4e Monitor Discover new peaks of productivity.Vibrant and color-rich visuals: Get more work done with sharp and clear images on the 27-inch FHD monitor. Enjoy a smooth working experience with the 100Hz high refresh rate, which can be manually adjusted to 48Hz to further match your workflow.Seamless and intuitive connectivity: Connect to any peripheral with ease. Enjoy connectivity and compatibility with all your devices using the VGA and HDMI ports, unlocking greater productivity for your workflows.Environmentally friendly design: Make an environment-friendly choice with this monitor that limits environmental impact by coming packaged with recyclable cushion, and meets major international standards for energy efficiency with its ENERGY STAR 8.0 and EPEAT® Gold certifications.