Technical Specifications Picture/Display LCD panel type VA LCD Backlight type W-LED system Panel Size 21.5 inch/54.6 cm Display Screen Coating Anti-glare, 3H, Haze 25% Effective viewing area 478.656 (H) x 260.28 (V) Aspect ratio 16:9 Maximum resolution 1920 x 1080 @ 75 Hz* Pixel Density 102 PPI Response time (typical) 4 ms (GtG)* Brightness 250 cd/m² Contrast ratio (typical) 3000:1 SmartContrast Mega Infinity DCR Pixel pitch 0.2493 x 0.241 mm Viewing angle 178º (H)/178º (V) @ C/R > 10 Display colours 16.7 M Picture enhancement SmartImage Scanning Frequency 30–85 kHz (H) / 48–75 Hz (V) sRGB Yes Flicker-free Yes LowBlue Mode Yes EasyRead Yes Adaptive sync Yes Connectivity Signal Input VGA (Analogue) DisplayPort 1.2 HDMI 1.4 Sync Input Separate Sync Sync on Green Audio (In/Out) PC audio-in Headphone out