
Acer RT280K
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Monitors
Product specifications and review coverage for this exact model.

Image supplied through Icecat
iiyama X2491H-B1 is listed in the computer monitors category. The recorded specifications include display diagonal: 60.5 cm (23.8"); display resolution: 1920 x 1080 pixels; panel type: IPS; maximum refresh rate: 120 Hz. This entry covers manufacturer code X2491H-B1. Specifications relate to this exact source record; other editions or packages may differ.
Automatically assembled from the source specifications. This is a factual summary, not a hands-on review.
No scored critic reviews have been imported for this exact product yet. It remains unrated.
The COR Score gives each publisher one rating. Scores are converted to the same five-point scale.
Manufacturer code: X2491H-B1. Icecat product 141977168 · Checked 16 Sep 2026. The source lists this code for Great Britain. No specifications are transferred from other editions.
The main features to compare for this exact model. Missing details are not assumed.
| Screen size | 60.5 cm (23.8") |
|---|---|
| Screen resolution | 1920 x 1080 pixels |
| Panel type | IPS |
| Maximum refresh rate | 120 Hz |
| Display brightness (typical) | 350 cd/m² |
| HDMI ports | 1 |
| DisplayPort connections | 1 |
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| Built-in speakers | No |
|---|---|
| Headphone out | Yes |
| Display technology | LCD |
|---|---|
| Touchscreen | No |
| Display surface | Matt |
| Screen shape | Flat |
| Contrast ratio (typical) | 1500:1 |
| Contrast ratio (dynamic) | 80000000:1 |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
| Display number of colours | 16.7 million colours |
| Display diagonal (metric) | 60.5 cm |
| On Screen Display (OSD) languages | Czech, German, English, Spanish, French, Italian, Japanese, Dutch, Polish, Russian, Ukrainian |
| Native refresh rate | 60 Hz |
| Built-in camera | No |
|---|
| Horizontal scan range | 30 - 140 kHz |
|---|
| Built-in USB hub | No |
|---|---|
| HDMI | Yes |
| HDMI version | 1.4 |
| DisplayPort out version | 1.2 |
| Panel mounting interface | 100 x 100 mm |
| HDMI cable length | 1.5 m |
| Energy efficiency class (SDR) | C |
|---|---|
| Energy efficiency class (HDR) | Not available |
| Energy consumption (SDR) per 1000 hours | 12 kWh |
| Power consumption (typical) | 12 W |
| Power consumption (standby) | 0.4 W |
| Power consumption (off) | 0.3 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Power supply type | Internal |
| Energy efficiency scale | A to G |
| User controls | colour settings (i-Style colour, blue light reducer, RGB range, colour temperature, user preset), OSD (OSD H. position, OSD V. position, OSD time, OSD background, DDC/CI control, display information), language, extra 1 (sharpness, video mode adjust, opening logo, power LED), extra 2 (shortcut key), input select, audio settings (volume, mute audio), reset (reset all?) |
|---|---|
| Control panel | Joystick: Power/Menu (Centre), Up/Signal Select, Down, Left/Submenu, Right/Volume |
| Product colour | Black |
|---|---|
| VESA mounting | Yes |
| Height adjustment | No |
| Width (with stand) | 539 mm |
| Depth (with stand) | 175 mm |
| Height (with stand) | 387 mm |
| Weight (with stand) | 3.2 kg |
| Power cable length | 1.5 m |
| Weight | 3.2 kg |
| Height | 387 mm |
| Width | 539 mm |
| Depth | 175 mm |
| Compliance certificates | CE, EAC, PSE, REACH, RoHS, TÜV mark, UKCA, VCCI, WEEE |
|---|
| HD type | Full HD |
|---|---|
| Native aspect ratio | 16:9 |
| Response time (MPRT) | 1 ms |
| Pixel pitch | 0.275 x 0.275 mm |
| Viewable size, horizontal | 52.7 cm |
| Viewable size, vertical | 29.6 cm |
| DDC/CI | Yes |
| sRGB coverage (typical) | 96% |
| NTSC coverage (typical) | 72% |
| AMD FreeSync | Yes |
| VESA Adaptive Sync support | Yes |
| Flicker-free technology | Yes |
| Low Blue Light technology | Yes |
| Market positioning | Office |
| HDCP | Yes |
| Cable management | Yes |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Tilt adjustment | Yes |
| Tilt angle range | -3 - 20° |
| Sustainability certificates | ErP, TCO |
| Package width | 615 mm |
|---|---|
| Package depth | 126 mm |
| Package height | 395 mm |
| Package weight | 4.8 kg |
| Cables included | AC, HDMI |
| Packaging content | quick start guide, safety guide |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.
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