Acer Nitro KG271U X 27" Monitor WQHD 2560x1440 240Hz 1ms 350Nit HDMI DisplayPort. Experience gaming at its finest with this professionally refurbished Acer Nitro gaming monitor. From service-oriented technologies to the Internet of Things to gaming and virtual reality, Acer’s 7,000+ employees are dedicated to the research, design, marketing, sale, and support of products and solutions that break barriers between people and technology.