Price: (as of – Details) AOPEN’s 31.5 inch ultra-thin IPS monitor with 4K UHD resolution delivers the incredible. Crisp, true-to-life … Continue reading AOPEN by Acer 31.5 Inch 4K UHD ZeroFrame Home & Office Monitor | AMD FreeSync | Ultra-Thin Stylish Design | HDR 10 | 4ms G to G | Low Blue Light | Tilt | DP 1.2 & 2 x HDMI 2.0