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| General Info | ||
|---|---|---|
| Model Number | Dell U2421E | Lenovo ThinkVision T24t-20 |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2020 | 2021 |
| Brand | Dell | Lenovo |
| Model Number | U2421E | ThinkVision T24t-20 |
| Display | ||
| Screen Size Class | 24" (inches) | 24" (inches) |
| Diagonal Size | 24.06 in 61.1 cm 611 mm 2 ft |
23.81 in 60.5 cm 604.698 mm 1.98 ft |
| Screen Width | 20.41 in 51.8 cm 518.4 mm 1.7 ft |
20.75 in 52.7 cm 527.04 mm 1.73 ft |
| Screen Height | 12.76 in 32.4 cm 324 mm 1.06 ft |
11.67 in 29.6 cm 296.46 mm 0.97 ft |
| Display Type | IPS | IPS |
| 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 | 16:10 | 16:9 |
| Screen Resolution | 1920 x 1200 | 1920 x 1080 |
| Screen Pixel Pitch | 0.275 mm | 0.275 mm |
| Screen Pixel Density | 94 ppi | 92 ppi |
| Screen-to-Body Ratio | 100.87 % | 88.65 % |
| Backlight Source | W-LED | W-LED |
| sRGB | 99 % | 99 % |
| Screen Brightness | 350 cd/m² | 300 cd/m² |
| Static Screen Contrast | 1000 : 1 | 1000 : 1 |
| Dynamic Screen Contrast | 3000000 : 1 | |
| Screen Horizontal Viewing Angle | 178 ° | 178 ° |
| Screen Vertical Viewing Angle | 178 ° | 178 ° |
| Display Minimum Response Time | 5 ms | 4 ms |
| Display Average Response Time | 8 ms | 6 ms |
| Display Coating | Anti-glare/Matte (3H) | |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 1.54 in 3.9 cm 39 mm 0.13 ft |
1.74 in 4.4 cm 44.1 mm 0.14 ft |
| Case Weight | 4 kg 9 lbs |
3.79 kg 8 lbs |
| Case Width with Stand | 20.9 in 53.1 cm 530.8 mm 1.74 ft |
21.25 in 54 cm 539.8 mm 1.77 ft |
| Case Height with Stand | 14.33 in 36.4 cm 364 mm 1.19 ft |
13.41 in 34.1 cm 340.5 mm 1.12 ft |
| Case Depth with Stand | 6.81 in 17.3 cm 173 mm 0.57 ft |
9.61 in 24.4 cm 244.1 mm 0.8 ft |
| Case Weight with Stand | 6.1 kg 13 lbs |
5.85 kg 13 lbs |
| Case Color | Black | Black |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x USB 3.2 (Type-C; Gen 1; upstream; 90W; DP Alt Mode) 1 x Ethernet RJ45 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 (Output MST) 1 x HDMI 1.4 4 x USB 3.2 (Type-A; Gen 1; downstream; 2x BC 1.2) 1 x USB 3.2 (Type-C; Gen 1; downstream; 15W) |
1 x HDMI 1.4 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out 4 x USB 3.2 (Type-A; upstream) 1 x USB 3.2 (Type-C; Gen 1; upstream; DP Alt Mode) |
| Audio | ||
| Features | ||
| Cool Features | Easy Arrange Flicker-free technology Low Blue Light Infinity Edge design ComfortView Plus Dell Display Manager |
Lenovo ThinkColour Low Blue Light Smart Power 3-side NearEdgeless design Flicker-free technology |
| Extra Features | Security lock slot | |
| Ergonomics | ||
| Case Width | 20.9 in 53.1 cm 530.8 mm 1.74 ft |
21.25 in 54 cm 539.8 mm 1.77 ft |
| Case Height | 12.35 in 31.4 cm 313.7 mm 1.03 ft |
12.85 in 32.7 cm 326.5 mm 1.07 ft |
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 100 x 100 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | Yes | Yes |
| Height Adjustment Range | 150 mm 15 cm 5.9055 in 0.4921 ft |
90 mm 9 cm 3.5433 in 0.2953 ft |
| Landscape or Portrait Pivot Support | Yes | No |
| Left Pivot | 90 ° | |
| Right Pivot | 90 ° | |
| Left or Right Swivel Support | Yes | No |
| Left Swivel | 45 ° | |
| Right Swivel | 45 ° | |
| Forward and Backward Tilt Support | Yes | Yes |
| Forward Tilt | 5 ° | 5 ° |
| Backward Tilt | 21 ° | 70 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 60 Hz | 60 Hz |
| Horizontal Digital Frequency | 30 kHz - 83 kHz | |
| Screen Interpolation Measurement Unit | NULL | NULL |
| Accessories | ||
| Extras | DisplayPort cable USB Type-C to Type-A cable USB Type-C to Type-C cable |
DisplayPort cable (USA; Canada) USB Type-C to A cable (USA; Canada) USB Type-C to C cable |
| Certificates and Standards | ||
| Licenses | ENERGY STAR EPEAT Golf TCO Certified TUV Rheinland Low Blue Light Certified |
CCC China Energy Efficiency Standard Tier 1 Energy Star EPEAT Eyesafe Display Certification RoHS TCO Edge TÜV Rheinland Eye Comfort TÜV Low Blue Light Windows Certification (Windows 7 Windows 10) |
| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 0 °C - 40 °C 32 °F - 104 °F |
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| Safe Operating Humidity Level | 10 % - 80 % | |
| Internal Storage Temperature | -20 °C - 60 °C -4 °F - 140 °F |
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| Internal Storage Humidity | 5 % - 90 % | |
| Max Operating Altitude | 5000 | |
| Max Storage Altitude | 12192 |
| Dell U2421E | Lenovo ThinkVision T24t-20 |
