Display 12 differ Display diagonalDiffers 54.6 cm (21.5") 68.6 cm (27") Display resolution 1920 x 1080 pixels 1920 x 1080 pixels Native aspect ratio 16:9 16:9 Display technology LED LED Touchscreen No No HD type Full HD Full HD Panel typeDiffers IPS VA LED backlightKnown for one — Unknown — not stated by the source Backlight typeKnown for one W-LED — Unknown — not stated by the source Display brightness (typical)Differs 250 cd/m² 300 cd/m² Response time 5 ms 5 ms Screen shape Flat Flat Supported graphics resolutions 1920 x 1080 (HD 1080) 1920 x 1080 (HD 1080) Aspect ratioKnown for one 16:9 — Unknown — not stated by the source Contrast ratio (typical)Differs 1000:1 3000:1 Contrast ratio (dynamic)Differs 20000000:1 80000000:1 Dynamic contrast ratio marketing nameDiffers SmartContrast Mega Contrast Maximum refresh rateKnown for one 60 Hz — Unknown — not stated by the source Viewing angle, horizontal 178° 178° Viewing angle, vertical 178° 178° Display number of coloursDiffers 16.7 million colours 16.78 million colours Pixel pitchDiffers 0.248 x 0.248 mm 0.31125 x 0.31125 mm Pixel densityKnown for one 102 ppi — Unknown — not stated by the source Horizontal scan rangeKnown for one 30 - 83 kHz — Unknown — not stated by the source Vertical scan rangeKnown for one 56 - 76 Hz — Unknown — not stated by the source Viewable size, horizontalDiffers 47.6 cm 59.7 cm Viewable size, verticalDiffers 26.8 cm 33.6 cm Digital horizontal frequencyDiffers 30 - 83 kHz 24 - 82 kHz Digital vertical frequencyDiffers 56 - 76 Hz 50 - 75 Hz Sync-on-green (SOG) Display diagonal (metric)Known for one 54.6 cm — Unknown — not stated by the source DDC/CIKnown for one — Unknown — not stated by the source Colour gamut standardKnown for one sRGB — Unknown — not stated by the source 3DKnown for one No — Unknown — not stated by the source Separate H/V sync Display sRGBKnown for one — Unknown — not stated by the source Display panel sizeKnown for one 21.5 inch / 54.6 cm — Unknown — not stated by the source Supported video modesKnown for one — Unknown — not stated by the source 1080p Composite syncKnown for one — Unknown — not stated by the source Performance identical NVIDIA G-SYNCKnown for one No — Unknown — not stated by the source AMD FreeSyncKnown for one No — Unknown — not stated by the source Component video syncKnown for one Separate Sync, Sync-on-green (SOG) — Unknown — not stated by the source Flicker-free technologyKnown for one — Unknown — not stated by the source Windows operating systems supportedKnown for one — Unknown — not stated by the source Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Mac operating systems supportedKnown for one — Unknown — not stated by the source Ports & interfaces 2 differ Built-in USB hubDiffers No VGA (D-Sub) ports quantity 1 1 DVI portKnown for one No — Unknown — not stated by the source HDMI ports quantityDiffers 1.4 1 HDMI versionKnown for one 1.4 — Unknown — not stated by the source DisplayPorts quantity 1 1 Audio input Audio outputKnown for one — Unknown — not stated by the source Headphone outKnown for one — Unknown — not stated by the source Headphone outputs 1 1 PC Audio inKnown for one — Unknown — not stated by the source HDCPKnown for one No — Unknown — not stated by the source USB hub versionKnown for one — Unknown — not stated by the source 3.2 Gen 1 (3.1 Gen 1) Number of upstream portsKnown for one — Unknown — not stated by the source 1 USB Type-A downstream ports quantityKnown for one — Unknown — not stated by the source 2 AC (power) inKnown for one — Unknown — not stated by the source Ergonomics 3 differ VESA mounting Panel mounting interface 100 x 100 mm 100 x 100 mm Cable lock slotDiffers No Cable lock slot typeKnown for one Kensington — Unknown — not stated by the source Height adjustment Adjustable height (max) 13 cm 13 cm PivotKnown for one — Unknown — not stated by the source Pivot angleKnown for one 0 - 90° — Unknown — not stated by the source Swivelling Swivel angle rangeDiffers -175 - 175° -178 - 178° Tilt adjustment Tilt angle rangeDiffers -5 - 25° -5 - 20° On Screen Display (OSD)Known for one — Unknown — not stated by the source On Screen Display (OSD) languagesKnown for one Portuguese, Czech, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish, Ukrainian — Unknown — not stated by the source Plug and PlayKnown for one — Unknown — not stated by the source LED indicatorsKnown for one Operation, Stand-by — Unknown — not stated by the source Other features 2 differ Compatible operating systemsKnown for one Mac OS X; Windows 10 / 8.1 / 8 / 7 — Unknown — not stated by the source On/off switchKnown for one — Unknown — not stated by the source TV tuner integratedKnown for one No — Unknown — not stated by the source Exterior finish typeKnown for one Textured — Unknown — not stated by the source Compliance certificatesKnown for one RoHS — Unknown — not stated by the source EasyRead modeKnown for one — Unknown — not stated by the source Effective viewing areaKnown for one 476.1 x 267.8 mm — Unknown — not stated by the source Energy efficiency class (legacy scale)Known for one E — Unknown — not stated by the source Heavy metals freeKnown for one Hg (mercury) — Unknown — not stated by the source Monitor sync input signalKnown for one Separate Sync; Sync on Green — Unknown — not stated by the source No flickeringKnown for one — Unknown — not stated by the source Power consumption (economy mode)Known for one 9.5 W — Unknown — not stated by the source Signal inputKnown for one VGA (Analog ); HDMI 1.4 — Unknown — not stated by the source SoftBlueKnown for one — Unknown — not stated by the source User guideKnown for one — Unknown — not stated by the source Mercury contentKnown for one 0 mg — Unknown — not stated by the source Mean time between failures (MTBF)Known for one 70000 h — Unknown — not stated by the source Power managementKnown for one — Unknown — not stated by the source CertificationDiffers CE Mark, FCC Class B, SEMKO, cETLus, CU-EAC, EPA, WEEE, UKRAINIAN, ICES-003, TUV/ISO9241-307, PSB, CECP, TUV Cert. — blue light cut-off FCC-B,Energy Star 7.0, EPEAT, CE EMC, CB, RoHS Green BOM & RoHS DoC, ErP, REACH SVHC List & DoC, WEEE, TCO 7.0, GS, EAC / CU Picture enhancementKnown for one SmartImage — Unknown — not stated by the source Regulatory ApprovalsKnown for one CE Mark; FCC Class B; SEMKO; cETLus; CU-EAC; EPA; WEEE; UKRAINIAN; ICES-003; TUV/ISO9241-307; PSB; CECP; TUV Cert. - blue light cut-off — Unknown — not stated by the source User controlsKnown for one SmartImage; Input; Volume; Menu; Power On/Off — Unknown — not stated by the source Supplied AC adapter typeDiffers AC LED RotatingKnown for one — Unknown — not stated by the source 
