| Product Program Category |
| Displays |
Displays |
| Type |
| Monitor |
Monitor |
| Brand Name |
| DELL |
DELL |
| Model Name |
| U4320Q |
U4021QW |
| Model Number |
| U4320Qt |
U4021QWt |
| UPC |
| 884,116,365,914 |
884116381365;884116417255 |
| CB Model Identifier |
| ES_29573_U4320Qt_08222019221704_9895458 |
ES_29573_U4021QWt_09222020152448_1050504 |
| Meets ENERGY STAR Most Efficient 2024 Criteria |
| No |
No |
| ENERGY STAR Partner |
| Dell Inc. |
Dell Inc. |
| Product Category |
| Displays |
Displays |
| Date Available On Market |
| December 19, 2019 |
January 25, 2021 |
| Date Certified |
| August 21, 2019 |
September 22, 2020 |
| Markets |
| United States, Switzerland, Taiwan, Japan, Canada |
United States, Switzerland, Taiwan, Japan, Canada |
| Product Type |
| Monitor |
Monitor |
| Panel Type |
| IPS LCD |
IPS LCD |
| Native Resolution (pixels) |
| 3840 x 2160 |
5120 x 2160 |
| Total Native Resolution (megapixels) |
| 8 |
11.1 |
| Screen Size |
| 42.5 inches / 107.95 cm |
39.7 inches / 100.84 cm |
| Screen Area (square inches) |
| 772.33 inches / 1961.72 cm |
564.69 inches / 1434.31 cm |
| Model Features |
| USB-C,Built-In Speakers |
Curved Screen,Full Network Connectivity,USB-C,Built-In Speakers |
| Features Enabled in Default On Mode |
| Built-In Speakers |
Full Network Connectivity,Built-In Speakers |
| Features Enabled in Default Sleep Mode |
| None |
Full Network Connectivity |
| Signal or Data Interfaces |
| Display,HDMI,USB |
Thunderbolt,RJ45,Display,HDMI,USB |
| Power Source |
| Ac to dc internal power supply |
Ac to dc internal power supply |
| On Mode Power (watts) |
| 51 |
44.57 |
| Sleep Mode Power (watts) |
| 1 |
0.61 |
| Off Mode Power (watts) |
| 0 |
0.31 |
| Monitor Total Energy Consumption at 115 Volts (kWh/yr) |
| 159 |
140.12 |
| Maximum Total Energy Consumption Limit for Monitor Certification (kWh/yr) |
| 174 |
187.77 |
| Maximum Luminance (candelas per square meter) |
| 400 |
300 |
| Enhanced-Performance Display? |
| Yes |
Yes |
| Color Gamut |
| 0 |
0.4 |
| Color Spaces Supported |
| None |
None |
| High Dynamic Range (HDR) |
| N/A |
N/A |
| Display Contrast Ratio at 0 deg. Horiz. Viewing Angle |
| 1,000 |
1200 |
| Reported Contrast Ratio at -85 Degrees (Left) Horizontal Viewing Angle |
| 65 |
100 |
| Reported Contrast Ratio at +85 Degrees (Right) Horizontal Viewing Angle |
| 74 |
98 |
| USB-C with Power Delivery Supported |
| Yes |
Yes |
| Maximum Power Delivery (W) |
| 90 |
90 |
| Tiled Display System |
| No |
No |
