1. Introduction and Overview
The AOC CU34G2X is a 34-inch UltraWide QHD (3440x1440) curved gaming monitor designed to provide an immersive visual experience. Featuring a 1500R curved VA panel, it delivers vibrant colors and wide viewing angles. This monitor is engineered for high-performance gaming with a rapid 1ms (MPRT) response time and a 144Hz refresh rate, supported by Adaptive-Sync technology to minimize screen tearing and stuttering.
- Display Size: 34-inch Class (34-inch Viewable)
- Resolution: 3440x1440 UltraWide Quad HD (2K+)
- Panel Type: VA Panel for wide viewing angles and brilliant colors (115% sRGB, 98% Adobe RGB coverage)
- Curvature: 1500R for immersive viewing
- Response Time: 1ms (MPRT)
- Refresh Rate: 144Hz with Adaptive-Sync
- Design: 3-Sided frameless design
- Ergonomics: Height adjustable stand
2. What's in the Box
Verify that all components are present in the packaging:
- AOC CU34G2X 34-inch Monitor
- Power Cord
- HDMI Cable
- DisplayPort (DP) Cable
- Quick Start Guide (QSG)

Figure 2.1: Monitor and accessories as packaged.
3. Setup Instructions
3.1 Monitor Assembly
Carefully remove the monitor and its components from the packaging. Attach the stand base to the stand column, then secure the assembled stand to the back of the monitor. Ensure all connections are firm.

Figure 3.1: Rear view of the monitor with the stand.
3.2 Connecting Your Monitor
Connect the monitor to your computer using either the provided HDMI or DisplayPort cable. For optimal performance, including 144Hz refresh rate and Adaptive-Sync, a DisplayPort connection is recommended. Connect the power cord to the monitor and a power outlet.
- DisplayPort (DP): Supports 3440x1440 resolution at 144Hz with Adaptive-Sync.
- HDMI: Supports 3440x1440 resolution at lower refresh rates.
- USB Hub: Connect the included USB 3.0 cable from your PC to the monitor to enable the integrated USB hub (4x USB 3.0 ports, 1x USB 2.0 port). Power Delivery can be enabled via the monitor's settings.

Figure 3.2: Monitor input/output ports.
3.3 Ergonomic Adjustments
The monitor stand allows for height adjustment and tilt to achieve your preferred viewing angle. Gently push or pull the monitor to adjust its position.
Video 3.1: Official product video demonstrating the AOC CU34G2X monitor's features and ergonomic adjustments.
4. Operating Instructions
4.1 On-Screen Display (OSD) Menu
Access the OSD menu using the buttons located on the bottom edge of the monitor. The OSD allows you to configure various display settings, including brightness, contrast, color modes, input selection, and gaming features.
4.2 Gaming Features
- Adaptive-Sync: Synchronizes the monitor's refresh rate with your graphics card's frame rate to eliminate screen tearing and reduce input lag. Ensure this feature is enabled in your graphics card settings.
- 1ms (MPRT) Response Time: Provides ultra-fast pixel response for clear, blur-free motion in fast-paced games.
- 144Hz Refresh Rate: Delivers smooth and fluid visuals, crucial for competitive gaming.
- Game Modes: Preset display modes optimized for different game genres (e.g., FPS, RTS). These can be selected via the OSD menu.
4.3 Color Settings
The VA panel supports over 115% sRGB and 98% Adobe RGB color gamut coverage. Adjust color settings through the OSD menu to suit your preferences or specific content requirements.
5. Maintenance
To ensure the longevity and optimal performance of your monitor, follow these maintenance guidelines:
- Cleaning the Screen: Use a soft, lint-free cloth lightly dampened with water or a specialized screen cleaner. Avoid harsh chemicals or abrasive materials.
- Cleaning the Casing: Wipe the monitor casing with a soft, dry cloth.
- Ventilation: Ensure the monitor's ventilation openings are not blocked to prevent overheating.
- Power Off: Always power off the monitor when not in use for extended periods.
6. Troubleshooting
If you encounter issues with your monitor, refer to the following common troubleshooting steps:
- No Power: Check if the power cord is securely connected to both the monitor and the power outlet. Ensure the power outlet is functional.
- No Signal: Verify that the video cable (HDMI or DisplayPort) is correctly connected to both the monitor and your computer. Ensure the correct input source is selected via the OSD menu.
- Display Issues (e.g., flickering, tearing): Ensure Adaptive-Sync is enabled in both the monitor's OSD and your graphics card settings. Check for updated graphics drivers.
- Image Quality Issues: Adjust brightness, contrast, and color settings via the OSD menu. Reset to factory defaults if necessary.
- USB Ports Not Working: Ensure the USB 3.0 upstream cable is connected from the monitor to your PC. Check if USB Power Delivery is enabled in the OSD menu if needed.
7. Specifications
| Feature | Specification |
|---|---|
| Standing Screen Display Size | 34 Inches |
| Screen Resolution | 3440x1440 |
| Max Screen Resolution | 3440 x 1440 Pixels |
| Number of USB 2.0 Ports | 1 |
| Number of USB 3.0 Ports | 4 |
| Brand | AOC |
| Series | G Series |
| Item Model Number | CU34G2X |
| Item Weight | 10.34 pounds |
| Product Dimensions | 9.34 x 31.82 x 20.79 inches |
| Color | Black/Red |
| Manufacturer | TPV Technology |
| ASIN | B07ZB2TNZZ |
| Date First Available | October 19, 2019 |
| Screen Size | 34 Inches |
| Resolution | QHD Ultra Wide 1440p |
| Aspect Ratio | 21:9 |
| Screen Surface Description | Glossy |
8. Warranty and Support
AOC offers a comprehensive warranty program for its gaming monitors:
- 3-Year Zero-Bright-Dot: If a bright dot or dead pixel develops within 3 years of purchase, AOC will replace the monitor for free.
- 3-Year Advance Replacement: If your monitor requires replacement, a new unit is shipped as soon as the RMA is authorized, minimizing downtime.
- 1-Year (One-Time) Accidental Damage: Covers accidental damage within the first year of purchase (one replacement per product).
For further support or to learn more about AOC's commitment to a greener future, please visit the official AOC Monitors website.

Figure 8.1: AOC Re-Spawned Warranty Program overview.





