Key features Screen diagonal 68.6 cm (27") screen resolution 2560 x 1440 pixels energy efficiency class E native aspect ratio 16:9 panel type IPS Brightness (typical) 350 cd/m² response time 5 ms HD type quad HD screen technology LED screen shape flat contrast ratio 1000:1 Maximum refresh rate 75Hz viewing angle Horizontal 178° View Angle, Vertical 178° Display Number of Colors 16.7 Million Colors Display Surface Matt Digital Horizontal Frequency 15 - 90 kHz Digital Vertical Frequency 24 - 75 Hz Surface Hardness 3H Color Intensity 8 Bit Multimedia Built-in Speakers No Integrated Camera No Design Market Positioning Graphic Design Product color Black Frameless Design Yes Certification ctuVus, FCC-B, ICES003, Energy Star, EPEAT, mx-CoC, Mexico Energy Ports and Interfaces Integrated USB Hub Yes DVI Port No HDMI Yes Number of DisplayPort Ports 2 Audio Ports No Headphone Output Yes USB Hub Version 3.2 Gen 1 (3.1