Monitor Acer CB343CUR 34 inch UltraWide Quad HD LED 3440 x 1440

The Acer CB343CUR 34" UltraWide Quad HD LED monitor delivers a 3440 x 1440 resolution on a 34-inch curved IPS panel with a 21:9 aspect ratio. Designed for extended desktop space, the display combines LED backlighting, 300 cd/m² typical brightness and a 1000:1 typical contrast ratio to render detailed images and wide color coverage. With a 4 ms response time and 178° horizontal and vertical viewing angles, the screen maintains clarity across multiple seating positions. The model includes built-in speakers, an integrated USB hub with a downstream USB Type-C port, VESA mounting compatibility and height adjustment for ergonomic positioning.

Advantages

The UltraWide Quad HD resolution provides additional horizontal workspace compared with standard 16:9 monitors, useful for multitasking, spreadsheets and timeline-based editing. The IPS panel offers consistent color and viewing angles, while the curved screen improves perceived immersion and reduces eye movement across the width. A 4 ms response time supports smoother motion in video and casual gaming. Built-in speakers and an internal USB hub reduce cable clutter, and VESA support plus height adjustment allow flexible mounting and ergonomic setup.

Suitable for

• Office multitasking and productivity with multiple windows side by side
• Content creation workflows such as video editing and audio production
• Financial and data analysis with wide spreadsheets and dashboards
• Multimedia consumption, streaming and casual gaming
• Workspace setups requiring VESA mounting or adjustable monitor stands

Key specifications

• Display diagonal: 34 inches (curved)
• Resolution: 3440 x 1440 (UltraWide Quad HD)
• Panel type: IPS with LED backlight
• Aspect ratio: 21:9
• Response time: 4 ms
• Brightness (typical): 300 cd/m²
• Contrast ratio (typical): 1000:1
• Viewing angles: 178° horizontal / 178° vertical
• Built-in speaker(s): yes
• USB hub: yes, with 1 downstream USB Type-C port
• VESA mounting compatible
• Colours: black, silver
• Energy efficiency class (SDR/HDR): G / G
• Energy consumption per 1000 hours (SDR/HDR): 32 kWh / 50 kWh

How to use

Place the monitor on a stable desk or attach it to a VESA-compatible arm or bracket according to the mounting instructions. Connect your video source to the monitor using the supported input; use the USB Type-C downstream port where applicable to provide data connectivity or connect peripherals through the built-in USB hub. Adjust the screen height to align the top third of the display with eye level for ergonomic viewing. Use the on-screen display (OSD) controls to set brightness, contrast and color presets that match your working environment. For multi-monitor setups, configure the operating system display settings to extend or mirror the desktop as required.

Recommendations

For prolonged use, set brightness to a comfortable level and enable ambient light adjustments if available. When performing color-critical work, allow the monitor to warm up for 20–30 minutes and use hardware or software calibration tools. Ensure adequate desk depth and viewing distance for the 34" curved panel to minimize neck movement and preserve a consistent viewing angle across the ultrawide surface.