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| General Info | ||
|---|---|---|
| Model Number | Acer B277K | HP U28 4K HDR |
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| Price | ||
| Type | Monitor | Monitor |
| Year | 2018 | 2020 |
| Brand | Acer | HP |
| Model Number | B277K | U28 4K HDR |
| Alias | B277K bmiipprzx | 1Z978AA |
| Display | ||
| Screen Size Class | 27" (inches) | 28" (inches) |
| Diagonal Size | 26.96 in 68.5 cm 684.7 mm 2.25 ft |
27.9 in 70.9 cm 708.538 mm 2.32 ft |
| Screen Width | 23.47 in 59.6 cm 596.16 mm 1.96 ft |
24.45 in 62.1 cm 620.928 mm 2.04 ft |
| Screen Height | 13.2 in 33.5 cm 335.34 mm 1.1 ft |
13.44 in 34.1 cm 341.28 mm 1.12 ft |
| Display Type | IPS | IPS |
| Display Bit Depth | 10 bits (8 bits + FRC) | 10 bits (8 bits + FRC) |
| Frame Rate Control | Yes | Yes |
| Max Number of Colors | 1073741824 | 1073741824 |
| Bits | 30 | 30 |
| Screen Aspect Ratio | 16:9 | 16:9 |
| Screen Resolution | 3840 x 2160 | 3840 x 2160 |
| Screen Pixel Pitch | 0.155 mm | 0.116 mm |
| Screen Pixel Density | 163 ppi | 157 ppi |
| Screen-to-Body Ratio | 88.72 % | 89.61 % |
| Backlight Source | W-LED | W-LED |
| DCI P3 | 93% | |
| sRGB | 100 % | 100 % |
| Screen Brightness | 300 cd/m² | 400 cd/m² |
| Static Screen Contrast | 1000 : 1 | 1000 : 1 |
| Dynamic Screen Contrast | 100000000 : 1 | |
| Screen Horizontal Viewing Angle | 178 ° | 178 ° |
| Screen Vertical Viewing Angle | 178 ° | 178 ° |
| Display Minimum Response Time | 4 ms | 4 ms |
| Display Coating | Anti-glare/Matte (3H) | Anti-glare/Matte (3H) |
| HDR | HDR | |
| 3D | No | No |
| Size, weight, color | ||
| Case Depth | 2.59 in 6.6 cm 65.7 mm 0.22 ft |
1.71 in 4.3 cm 43.4 mm 0.14 ft |
| Case Weight | 4.36 kg 10 lbs |
|
| Case Width with Stand | 24.17 in 61.4 cm 614 mm 2.01 ft |
25.08 in 63.7 cm 637.1 mm 2.09 ft |
| Case Height with Stand | 15.79 in 40.1 cm 401 mm 1.32 ft |
20.92 in 53.1 cm 531.4 mm 1.74 ft |
| Case Depth with Stand | 8.17 in 20.8 cm 207.5 mm 0.68 ft |
7.48 in 19 cm 189.9 mm 0.62 ft |
| Case Weight with Stand | 6.5 kg 14 lbs |
6.35 kg 14 lbs |
| Case Color | Black | Black |
| Hardware | ||
| Internal Storage | 8 | |
| Built-in Camera | No | No |
| Connectivity | 2 x HDMI 2.0 1 x DisplayPort 1.2 1 x 3.5 mm Audio In 1 x 3.5 mm Audio Out 1 x DisplayPort 1.2 (Input mini) 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream) |
1 x HDMI 2.0 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out 1 x USB (Type-C; upstream; 65W; DP Alt Mode) 3 x USB 3.2 (Type-A; Gen 1; downstream) |
| Audio | ||
| Audio Speakers | 2 x 2W | 2 x 3W |
| Features | ||
| Cool Features | Flicker-free technology HDCP (High-bandwidth Digital Content Protection) AMD FreeSync technology Blue Light Filter |
Flicker-free technology Low Blue Light |
| Extra Features | Security lock slot | |
| Ergonomics | ||
| Case Width | 24.17 in 61.4 cm 614 mm 2.01 ft |
25.08 in 63.7 cm 637.1 mm 2.09 ft |
| Case Height | 14.45 in 36.7 cm 367 mm 1.2 ft |
14.61 in 37.1 cm 371.2 mm 1.22 ft |
| Vesa Mount Support | Yes | Yes |
| VESA Interface Standard Size | 100 x 100 | 100 x 100 |
| Removable VESA Stand | Yes | Yes |
| Height Adjustment | Yes | Yes |
| Height Adjustment Range | 120 mm 12 cm 4.7244 in 0.3937 ft |
|
| Landscape or Portrait Pivot Support | Yes | Yes |
| Left Pivot | 0 ° | 90 ° |
| Right Pivot | 90 ° | 90 ° |
| Left or Right Swivel Support | Yes | Yes |
| Left Swivel | 45 ° | |
| Right Swivel | 45 ° | |
| Forward and Backward Tilt Support | Yes | Yes |
| Forward Tilt | 5 ° | 5 ° |
| Backward Tilt | 25 ° | 23 ° |
| Frequency and Interpolation | ||
| Vertical Digital Frequency | 40 Hz - 60 Hz | 23 Hz - 75 Hz |
| Horizontal Digital Frequency | 30 kHz - 160 kHz | 30 kHz - 140 kHz |
| Screen Interpolation Measurement Unit | NULL | |
| Accessories | ||
| Extras | DisplayPort cable - optional HDMI cable - optional USB 3.0 upstream cable |
DisplayPort cable HDMI cable USB Type-C cable |
| Certificates and Standards | ||
| Licenses | ENERGY STAR 7.0 Epeat Gold ErP TCO Certified Displays 7.0 |
Australian-New Zealand MEPS BSMI CB CCC CE CECP CEL EAC ENERGY STAR FCC ISO 9241-307 KC/KCC NOM PSB SEPA TCO Certified TUV-S UL/CSA VCCI Vietnam MEPS WEEE ISC WW application ICE |
| Usage and Storage Requirements | ||
| Safe Operating Temperature Level | 5 °C - 35 °C 41 °F - 95 °F |
|
| Safe Operating Humidity Level | 20 % - 80 % |
| Acer B277K | HP U28 4K HDR |
