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General| Panel type | TN |
|---|---|
| Color gamut | 83 % |
| Pixel pitch | 0.2482 x 0.2482 mm |
| Screen shape | Flat |
| Pixel density | 102 ppi |
| Backlight type | LED |
| Display diagonal | 21.5 \ |
| Display technology | LCD |
| Native aspect ratio | 16:9 |
| Vertical scan range | 56 - 76 Hz |
| Maximum refresh rate | 60 Hz |
| Horizontal scan range | 30 - 83 kHz |
| Viewable size, vertical | 268.11 mm |
| Viewing angle, vertical | 160 ° |
| Display number of colors | 16.78 million colors |
| Display diagonal (metric) | 54.68 cm |
| Viewable size, horizontal | 476.64 mm |
| Viewing angle, horizontal | 170 ° |
| Display brightness (typical) | 250 cd/m² |
| Supported graphics resolutions | 640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 1024 (SXGA), 1600 x 900, 1920 x 1080 (HD 1080) |
| HDMI | Yes |
| HDMI version | 1.4 |
| DisplayPorts quantity | 0 |
| Tilt angle range | -5 - 21 ° |
| Panel mounting interface | 100 x 100 mm |
| Input current | 0.7 A |
| AC input voltage | 100 - 240 V |
| Power supply type | Internal |
| AC input frequency | 50 - 60 Hz |
| Energy efficiency scale | A to G |
| Power consumption (max) | 16 W |
| Power consumption (off) | 0.2 W |
| Annual energy consumption | 35.16 kWh |
| Power consumption (standby) | 0.3 W |
| Power consumption (typical) | 9.7 W |
| Package weight | 4900 g |
| Operating altitude | 0 - 5000 m |
| Non-operating altitude | 0 - 12192 m |
| Storage temperature (T-T) | -20 - 60 °C |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage relative humidity (H-H) | 5 - 90 % |
| Operating relative humidity (H-H) | 10 - 80 % |
| Product color | Black |
| Market positioning | Home |
| Sustainability certificates | RoHS, ENERGY STAR |
| Cables included | AC, HDMI |
| Harmonized System (HS) code | 85285210 |
Weight and Dimensions| Bezel width (top) | 17.8 mm |
|---|---|
| Depth (with stand) | 171 mm |
| Width (with stand) | 512.2 mm |
| Height (with stand) | 397.3 mm |
| Weight (with stand) | 3140 g |
| Depth (without stand) | 52.4 mm |
| Height (without stand) | 303.7 mm |
| Weight (without stand) | 2700 g |
Lists the components included with the monitor.
Details the technical specifications and features of the monitor models.
Describes the physical buttons, ports, and indicators on the monitor.
Provides detailed technical specifications for the E2221HN and E2421HN models.
Details the supported display resolutions and scan ranges.
Lists the power consumption and electrical input requirements.
Provides dimensions and weight of the monitor.
Outlines operating temperature, humidity, and altitude ranges.
Details the pin configurations for D-Sub and HDMI connectors.
Provides instructions for attaching the monitor stand.
Guides on connecting video cables (HDMI/VGA) to the computer.
Explains how to use the cable-management slot for neatness.
Details the procedure for detaching the monitor stand from the display.
Instructions on how to power on the monitor.
Explains the function of each button on the monitor's front panel.
Guides on navigating and using the monitor's OSD menu for settings.
Instructions for setting the optimal display resolution (1920 x 1080).
Describes how to adjust the monitor's tilt for comfortable viewing.
Procedure to check monitor functionality if the screen remains dark.
Tool to help determine if screen abnormalities are monitor or computer related.
Provides solutions for common monitor symptoms like no video or poor focus.
Addresses specific issues related to monitor controls and display.
General warnings regarding the use of controls and procedures.
Information on regulatory compliance and notices for US users.
Provides contact information for Dell support and service.
Links to EU database entries for energy labels and product information.
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