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| General Info | ||
|---|---|---|
| Model Number | Lenovo L27m-28 | Dell S2721HN |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2018 | 2020 |
| Brand | Lenovo | Dell |
| Model Number | L27m-28 | S2721HN |
| Alias | 65E6KAC1EU 65E6KCC1US |
S2721NX |
| Display | ||
| Screen Size Class | 27" (inches) | 27" (inches) |
| Diagonal Size | 27 in 68.6 cm 685.8 mm 2.25 ft |
27 in 68.6 cm 685.891 mm 2.25 ft |
| Screen Width | 23.54 in 59.8 cm 597.888 mm 1.96 ft |
23.54 in 59.8 cm 597.89 mm 1.96 ft |
| Screen Height | 13.24 in 33.6 cm 336.312 mm 1.1 ft |
13.24 in 33.6 cm 336.312 mm 1.1 ft |
| Display Type | IPS | IPS |
| Display Bit Depth | 8 bits (6 bits + FRC) | 8 bits |
| Frame Rate Control | Yes | |
| Max Number of Colors | 16777216 | 16777216 |
| Bits | 24 | 24 |
| Screen Aspect Ratio | 16:9 | 16:9 |
| Screen Resolution | 1920 x 1080 | 1920 x 1080 |
| Screen Pixel Pitch | 0.311 mm | 0.311 mm |
| Screen Pixel Density | 81 ppi | 81 ppi |
| Screen-to-Body Ratio | 89.66 % | 90.67 % |
| Backlight Source | W-LED | W-LED |
| NTSC 1953 | 72 % | 72 % |
| Screen Brightness | 250 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 | 4 ms | 4 ms |
| Display Average Response Time | 6 ms | 8 ms |
| Display Maximum Response Time | 14 ms | |
| Display Coating | Anti-glare/Matte | Anti-glare/Matte (3H) |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 1.82 in 4.6 cm 46.2 mm 0.15 ft |
2.13 in 5.4 cm 54 mm 0.18 ft |
| Case Weight | 4.74 kg 10 lbs |
4.3 kg 9 lbs |
| Case Width with Stand | 24.09 in 61.2 cm 611.9 mm 2.01 ft |
24.01 in 61 cm 609.9 mm 2 ft |
| Case Height with Stand | 17.46 in 44.4 cm 443.5 mm 1.46 ft |
17.85 in 45.3 cm 453.3 mm 1.49 ft |
| Case Depth with Stand | 8.27 in 21 cm 210 mm 0.69 ft |
7.35 in 18.7 cm 186.8 mm 0.61 ft |
| Case Weight with Stand | 5.17 kg 11 lbs |
5.2 kg 11 lbs |
| Case Color | Black | Black, Silver |
| Hardware | ||
| Built-in Camera | No | No |
| Connectivity | 1 x HDMI 1.4 1 x D-sub 1 x 3.5 mm Audio Out 1 x USB 3.1 (downstream) 1 x USB 3.1 (Type-C) |
2 x HDMI 1.4 1 x 3.5 mm Audio Out |
| Audio | ||
| Features | ||
| Cool Features | DDC/CI Flicker-free technology HDCP (High-bandwidth Digital Content Protection) AMD FreeSync technology Blue Light Filter |
Flicker-free technology Low Blue Light 3-sided bezeless design AMD FreeSync technology |
| Extra Features | Anti-theft stand lock slot - Kensington | Anti-theft stand lock slot - Kensington S2721HN - silver S2721NX - black |
| Ergonomics | ||
| Case Width | 24.09 in 61.2 cm 611.9 mm 2.01 ft |
24.01 in 61 cm 609.9 mm 2 ft |
| Case Height | 14.43 in 36.7 cm 366.5 mm 1.2 ft |
14.31 in 36.4 cm 363.6 mm 1.19 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 ° | 21 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 49 Hz - 76 Hz | 48 Hz - 75 Hz |
| Horizontal Digital Frequency | 54 kHz - 90 kHz | 30 kHz - 83 kHz |
| Screen Interpolation Measurement Unit | NULL | |
| Accessories | ||
| Extras | D-sub cable USB Type-C cable |
HDMI cable |
| Certificates and Standards | ||
| Licenses | BSMI C-Tick CCC CE CECP ENERGY STAR 7.1 FCC Class B KC RoHS TCO Certified Display 7.0 TCO Edge 2.0 TÜV/GS VCCI WHQL (Windows 10; Windows 8.1; Windows 8; Windows 7) |
ENERGY STAR 8.0 EPEAT RoHS TCO Certified TUV Flicker Free TUV Low Blue Light |
| 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 % | 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 % | 5 % - 90 % |
| Max Operating Altitude | 5000 | 5000 |
| Max Storage Altitude | 12192 | 12192 |
| Lenovo L27m-28 | Dell S2721HN |
