Display Size 21.45″ View Area 478.7×260.3 mm Panel VA Backlight WLED Aspect Ratio 16:9 Resolution 1920×1080 Pixel Pitch 0.249×0.241 mm Dot / Pixel Per Inch 103 dpi View Angle (H / V) 178° / 178° Response Time 4ms (Extreme mode) / 6ms (Typical mode) / 16ms (Off mode) Color Support 16.7 Million Refresh Rate 75Hz Brightness 250 cd/m² Contrast Ratio 3000:1 Color Gamut 72% NTSC Screen Surface Treatment Anti-glare Curvature None Camera None Microphone None Speakers None Power Consumption (Typical / Maximum) 15W / 20.5W Power Adapter Integrated Touchscreen None Smart System None DESIGN Stand Tilt Stand Case Color Cloud Grey Side Bezel Width 1.5 mm Mounting Supports VESA mount 100mm ThinkCentre M Series Support Tiny, Nano Support Dimensions (WxDxH) Lowest Position | 491.6 x 182.8 x 401.6 mm (19.35 x 7.19 x 15.81 inches) Highest Position | 491.6 x 182.8 x 401.6 mm (19.35 x 7.19 x 15.81 inches) Unpacked Head Only | 491.6 x 290.3 x 41.0 mm (19.35 x 1.61 x 11.43 inches) Packaging Dimensions (WxDxH) 588 x 117 x 353 mm (23.15 x 4.61 x 13.90 inches) Weight Monitor With Stand | 3.1 kg (6.8 lbs) Monitor Head Only | 2.2 kg (4.9 lbs) Packaging Weight 4.2 kg (9.26 lbs) CONNECTIVITY USB Port None Video Connector 1x HDMI® 1.4, 1x VGA Network Connectivity None SERVICE Base Warranty 3-year CERTIFICATIONS Environmental Certification RoHS Ergonomic Certification Eyesafe® 2.0, TÜV Low Blue Light (Hardware solution), TÜV Rheinland® Eye Comfort Sync Technology AMD FreeSync™ Special Features AMD FreeSync™ AMD FreeSync technology only can work with AMD Radeon™ series graphics card. Lenovo® Artery (Lenovo Accessories and Display Manager) Support Lenovo Artery supports Windows® 10 & 11, Mac OS, and Windows On Arm (functions vary across systems). Lenovo Accessories and Display Manager is formerly Lenovo Display Control Center. Natural Low Blue Light SOFTWARE Operating System Support Windows® 10, Windows 11 ACCESSORIES Video Cables HDMI® Cable