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| General Info | ||
|---|---|---|
| Model Number | Lenovo D20-30 | Acer QG221Q bii |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2022 | 2019 |
| Brand | Lenovo | Acer |
| Model Number | D20-30 | QG221Q bii |
| Alias | 66E9KAC4 | |
| Display | ||
| Screen Size Class | 20" (inches) | 22" (inches) |
| Diagonal Size | 19.45 in 49.4 cm 494.1 mm 1.62 ft |
21.5 in 54.6 cm 546.1 mm 1.79 ft |
| Screen Width | 17.05 in 43.3 cm 432.96 mm 1.42 ft |
18.74 in 47.6 cm 476.064 mm 1.56 ft |
| Screen Height | 9.37 in 23.8 cm 238.05 mm 0.78 ft |
10.54 in 26.8 cm 267.786 mm 0.88 ft |
| Display Type | TN | VA |
| Display Bit Depth | 8 bits (6 bits + FRC) | 8 bits (6 bits + FRC) |
| Frame Rate Control | Yes | Yes |
| Max Number of Colors | 16777216 | 16777216 |
| Bits | 24 | 24 |
| Screen Aspect Ratio | 16:9 | 16:9 |
| Screen Resolution | 1600 x 900 | 1920 x 1080 |
| Screen Pixel Pitch | 0.271 mm | 0.248 mm |
| Screen Pixel Density | 94 ppi | 102 ppi |
| Screen-to-Body Ratio | 78.22 % | 88.43 % |
| Backlight Source | W-LED | W-LED |
| NTSC 1953 | 72 % | 72 % |
| Screen Brightness | 250 cd/m² | 250 cd/m² |
| Static Screen Contrast | 1000 : 1 | 1000 : 1 |
| Dynamic Screen Contrast | 3000000 : 1 | 100000000 : 1 |
| Screen Horizontal Viewing Angle | 170 ° | 178 ° |
| Screen Vertical Viewing Angle | 160 ° | 178 ° |
| Display Minimum Response Time | 2 ms | |
| Display Average Response Time | 5 ms | |
| Display Coating | Anti-glare/Matte | Anti-glare/Matte |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 1.9 in 4.8 cm 48.3 mm 0.16 ft |
2.58 in 6.6 cm 65.5 mm 0.21 ft |
| Case Weight | 2.2 kg 5 lbs |
2.96 kg 7 lbs |
| Case Width with Stand | 18.3 in 46.5 cm 464.8 mm 1.52 ft |
19.28 in 49 cm 489.7 mm 1.61 ft |
| Case Height with Stand | 13.84 in 35.2 cm 351.6 mm 1.15 ft |
15.57 in 39.6 cm 395.5 mm 1.3 ft |
| Case Depth with Stand | 7.1 in 18 cm 180.4 mm 0.59 ft |
7.3 in 18.6 cm 185.5 mm 0.61 ft |
| Case Weight with Stand | 2.5 kg 6 lbs |
3.36 kg 7 lbs |
| Case Color | Raven Black | Black |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x HDMI 1.4 1 x D-sub |
1 x HDMI 1 x D-sub |
| Audio | ||
| Audio Speakers | 2 x 2W | |
| Features | ||
| Cool Features | Low Blue Light | AMD FreeSync technology |
| Extra Features | Anti-theft stand lock slot - Kensington | |
| Ergonomics | ||
| Case Width | 18.3 in 46.5 cm 464.8 mm 1.52 ft |
19.28 in 49 cm 489.7 mm 1.61 ft |
| Case Height | 11.16 in 28.4 cm 283.5 mm 0.93 ft |
11.59 in 29.4 cm 294.4 mm 0.97 ft |
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 100 x 100 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | No | No |
| Landscape or Portrait Pivot Support | No | No |
| Left or Right Swivel Support | No | No |
| Forward and Backward Tilt Support | Yes | Yes |
| Forward Tilt | 5 ° | 5 ° |
| Backward Tilt | 22 ° | 25 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 60 Hz | 56 Hz - 76 Hz |
| Horizontal Digital Frequency | 30 kHz - 85 kHz | |
| Screen Interpolation Measurement Unit | NULL | NULL |
| Accessories | ||
| Extras | HDMI cable | HDMI cable VGA cable |
| Certificates and Standards | ||
| Licenses | CCC China Energy Efficiency Standard Tier 2 ENERGY STAR 8.0 EPEAT Silver RoHS TCO 9.0 TYCO Edge 2.0 TÜV Rheinland Flicker Free TÜV Rheinland Low Blue Light Volatile Organic Compound Certification WHQL (Windows 10; Windows 7) |
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| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 0 °C - 45 °C 32 °F - 113 °F |
0 °C - 40 °C 32 °F - 104 °F |
| Safe Operating Humidity Level | 10 % - 80 % | |
| Internal Storage Temperature | -20 °C - 60 °C -4 °F - 140 °F |
-20 °C - 60 °C -4 °F - 140 °F |
| Internal Storage Humidity | 5 % - 95 % | 20 % - 80 % |
| Max Operating Altitude | 5000 | |
| Max Storage Altitude | 12192 |
| Lenovo D20-30 | Acer QG221Q bii |
