| ENERGY STAR Partner |
| NEC Display Solutions of America, Inc. |
NEC Display Solutions of America, Inc. |
| Product Category |
| Displays |
Displays |
| Type |
| Monitor |
Signage Display |
| Brand Name |
| NEC |
NEC |
| Model Name |
| E221N |
M551 |
| Model Number |
| M225AY |
M551 |
| Additional Model Information |
| E221N-C, E221N-BK, LCD-E221N, LCD-E221N-BK, MultiSync E221N, MultiSync E221N-BK, MultiSync E221N-C,, |
N/A |
| Date Available On Market |
| April 11, 2019 |
December 22, 2020 |
| Date Certified |
| November 6, 2019 |
September 17, 2020 |
| Markets |
| United States, Switzerland, Taiwan, Japan, Canada |
United States, Switzerland, Taiwan, Japan, Canada |
| CB Model Identifier |
| ES_1021168_E221N_11072019205124_1213239 |
ES_1021168_M551_09172020132541_3869046 |
| Meets ENERGY STAR Most Efficient 2024 Criteria |
| No |
No |
| Product Type |
| Monitor |
Signage Display |
| Panel Type |
| TN LCD |
IPS LCD |
| Native Resolution (pixels) |
| 1920 x 1080 |
3840 x 2160 |
| Total Native Resolution (megapixels) |
| 2 |
8.3 |
| Screen Size |
| 21.5 inches / 54.61 cm |
54.6 inches / 138.68 cm |
| Screen Area (square inches) |
| 197.6 inches / 501.90 cm |
1273.8 inches / 3235.45 cm |
| Model Features |
| Built-In Speakers |
Full Network Connectivity,Built-In Speakers,User Adjustable Backlight |
| Features Enabled in Default On Mode |
| None |
Full Network Connectivity |
| Features Enabled in Default Sleep Mode |
| None |
Full Network Connectivity |
| Signal or Data Interfaces |
| VGA,Other,Display,HDMI |
RS232,RJ45,Other,Display,HDMI,USB |
| Power Source |
| Ac to dc internal power supply |
Ac to dc internal power supply |
| On Mode Power (watts) |
| 11 |
85.73 |
| Sleep Mode Power (watts) |
| 0 |
0.69 |
| Off Mode Power (watts) |
| 0 |
0 |
| Monitor Total Energy Consumption at 115 Volts (kWh/yr) |
| 35 |
N/A |
| Maximum Total Energy Consumption Limit for Monitor Certification (kWh/yr) |
| 43 |
N/A |
| Maximum Luminance (candelas per square meter) |
| 250 |
500 |
| Enhanced-Performance Display? |
| No |
No |
| Color Spaces Supported |
| None |
NTSC |
| High Dynamic Range (HDR) |
| N/A |
N/A |
| Display Contrast Ratio at 0 deg. Horiz. Viewing Angle |
| 1,000 |
1100 |
| USB-C with Power Delivery Supported |
| No |
No |
| Tiled Display System |
| No |
No |
