Additional Details ------------------------------ Product description: Marketing Information from the Manufacturer. Manufacturer: Acer, Inc. Manufacturer Part Number: UMWB7AA301. Brand Name: Acer. Product Line: Vero. Product Series: B7. Product Model: B227Q E3. Product Name: Vero B7 B227Q E3 Widescreen LED Monitor. Product Type: LED Monitor. [Technical Information] Number of Screens: 1. Screen Size Class: 22". Viewable Screen Size: 21.5". Active Display Area (mm): 479x260. Screen Mode: Full HD. Screen Surface: Anti-glare. Panel Technology: In-plane Switching (IPS) Technology. Response Time: 4 ms. Response Time Details: 4ms GTG. Aspect Ratio: 16:9. Pixel Pitch: 9.8 mil. Horizontal Viewing Angle: 178°. Vertical Viewing Angle: 178°. Adjustable Display Pivot: Yes. Mount Type: Wall Mountable. Backlight Technology: LED. Maximum Adjustable Height: 5.91". Tilt Angle: -5° to 35°. Swivel Angle: -45° to 45°. Pivot Angle: +/-90°. Features: Kensington Lock Compatible. Horizontal Frequency: 31.47 kHz to 83.89 kHz - HDMI. 31.47 kHz to 83.89 kHz - VGA. Vertical Frequency: 48 Hz to 100 Hz - HDMI. 48 Hz to 75 Hz - VGA. 48 Hz to 100 Hz - DisplayPort. Frequency (Horizontal/Vertical): VGA:31.469KHz-83.894KHz/48Hz-75Hz. HDMI:31.469kHz-83.894kHz/48Hz-100Hz. Pivot: Yes. Cover Glass: No. [Video] Maximum Resolution: 1920 x 1080. Standard Refresh Rate: 100 Hz. Color Supported: 16.7 Million Colors. Native Contrast Ratio: 1,000:1. Dynamic Contrast Ratio: 100,000,000:1. Brightness: 250 Nit. Tearing Prevention Technology: FreeSync (DisplayPort/HDMI). Color Gamut: 99% sRGB. [Audio] Number of Speakers: 2.0. Speakers: Yes. Speaker Output Power: 2 W. [Interfaces/Ports] HDMI: Yes. HDMI Version: 1.4. VGA: Yes. Headphone: Yes. DisplayPort: Yes. DisplayPort Version: 1.2. Total Number of HDMI Ports: 1. Number of DisplayPorts: 1. Number of VGA Ports: 1. [Power Description] Standby Power Consumption (Energy S