Do you have a question about the Dell UltraSharp U2421HE and is the answer not in the manual?
Details the monitor's technical specifications and advanced capabilities.
Provides detailed technical specifications for U2421HE and U2721DE models.
Step-by-step instructions for assembling the monitor stand.
Steps for connecting the monitor to a computer using various cables.
How to turn on the monitor and use its front panel buttons for adjustments.
Guide to accessing and using the monitor's On-Screen Display menu.
Steps to run a self-test to diagnose monitor functionality.
Solutions for frequent issues like no video, missing pixels, and brightness.
Details the monitor's technical specifications and advanced capabilities.
Provides detailed technical specifications for U2421HE and U2721DE models.
Step-by-step instructions for assembling the monitor stand.
Steps for connecting the monitor to a computer using various cables.
How to turn on the monitor and use its front panel buttons for adjustments.
Guide to accessing and using the monitor's On-Screen Display menu.
Steps to run a self-test to diagnose monitor functionality.
Solutions for frequent issues like no video, missing pixels, and brightness.
| Pixel pitch | 0.2745 x 0.2745 mm |
|---|---|
| Screen shape | Flat |
| Pixel density | 92.5 ppi |
| Response time | 8 ms |
| Backlight type | LED |
| Display diagonal | 23.8 \ |
| Display technology | LCD |
| Native aspect ratio | 16:9 |
| Vertical scan range | 56 - 76 Hz |
| Maximum refresh rate | 60 Hz |
| Response time (fast) | 5 ms |
| Horizontal scan range | 30 - 83 kHz |
| Supported video modes | 480i, 480p, 576i, 576p, 720p, 1080i, 1080p |
| Viewable size diagonal | 604.7 mm |
| Viewable size, vertical | 296.46 mm |
| sRGB coverage (typical) | 99 % |
| Display number of colors | 16.78 million colors |
| Viewable size, horizontal | 527.04 mm |
| 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) |
| Product color | Black, Silver |
| Market positioning | Business |
| Sustainability certificates | ENERGY STAR |
| HDMI | Yes |
| HDMI version | 1.4 |
| USB hub version | 3.2 Gen 1 (3.1 Gen 1) |
| USB upstream port type | USB Type-C |
| Number of upstream ports | 1 |
| USB Type-A downstream ports quantity | 4 |
| Tilt angle range | -5 - 21 ° |
| Panel mounting interface | 100 x 100 mm |
| AC input frequency | 50 - 60 Hz |
| Energy efficiency scale | A to G |
| Power consumption (max) | 140 W |
| Power consumption (standby) | 0.2 W |
| Power consumption (typical) | 12.9 W |
| Power consumption (PowerSave) | 12.87 W |
| 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 % |
| Cables included | AC, DisplayPort, USB Type-C |
| Package type | Box |
| Package depth | 607.06 mm |
| Package width | 170.18 mm |
| Package height | 378.46 mm |
| Package weight | 7550 g |
| Harmonized System (HS) code | 85285210 |
| Bezel width (top) | 5 mm |
|---|---|
| Bezel width (side) | 5.1 mm |
| Depth (with stand) | 165 mm |
| Height (with stand) | 478.4 mm |
| Weight (with stand) | 4960 g |
| Bezel width (bottom) | 8 mm |
| Depth (without stand) | 39 mm |
| Width (without stand) | 538.5 mm |
| Height (without stand) | 313.7 mm |
| Weight (without stand) | 3370 g |











