1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your KOORUI 24-inch 165Hz 1080p IPS Gaming Monitor (Model MG24H3F). Please read this manual thoroughly before using the product to ensure proper functionality and to prevent damage.
Key Features:
- Vibrant Image Quality: Enjoy rich colors and vivid images with a 99% sRGB color gamut and a wide 178° viewing angle, supported by a robust IPS panel.
- High Refresh Rate & Fast Response: Experience smooth, fluid visuals with a 165Hz refresh rate and a 1ms GTG response time, minimizing motion blur and ghosting.
- Eye Care Technology: Integrated Flicker-Free technology and a Blue Light Filter reduce eye strain and fatigue during extended use.
- Adaptive Sync Support: Compatible with AMD FreeSync and G-Sync technologies to eliminate screen tearing and stuttering for a seamless gaming experience.
- Enhanced Gaming Features: Includes Dark Balance for improved visibility in dark scenes and a customizable game crosshair for precise targeting.

Figure 1.1: High Definition Display with True Color
2. Package Contents
Please check the package contents upon unboxing. If any items are missing or damaged, contact customer support.
- KOORUI 24-inch Monitor (LCD Screen)
- Monitor Stand (Base and Support)
- Power Adapter
- DisplayPort (DP) Cable
- User Manual
3. Setup Instructions
3.1 Assembling the Stand
- Carefully remove the monitor from its packaging, placing it face down on a soft, clean surface to prevent scratches.
- Attach the stand support to the monitor panel. Ensure it clicks securely into place or is fastened with screws if provided.
- Connect the stand base to the stand support. Tighten any screws to secure the assembly.
- Carefully lift the assembled monitor and place it on a stable, flat surface.

Figure 3.1: Rear Panel and Connectivity Options
3.2 Connecting to a Device
The monitor supports HDMI and DisplayPort connections.
- Power Connection: Connect the power adapter to the monitor's power input, then plug the adapter into a power outlet.
- DisplayPort Connection: Use the provided DisplayPort cable to connect the monitor to your computer's DisplayPort output.
- HDMI Connection: Alternatively, use an HDMI cable (not included) to connect the monitor to your computer or gaming console's HDMI output. The monitor has two HDMI 1.4 ports.
- Audio Output: Connect external speakers or headphones to the Audio Out port on the monitor if desired.
3.3 VESA Wall Mounting (Optional)
The monitor supports VESA 75x75mm mounting. To mount the monitor on a wall or an alternative stand:
- Remove the stand support from the monitor.
- Attach a VESA-compatible wall mount or arm (not included) to the 75x75mm mounting holes on the back of the monitor using appropriate screws.
- Follow the instructions provided with your VESA mount for secure installation.
4. Operating Instructions
4.1 Power On/Off
Press the power button (usually located on the back or bottom of the monitor) to turn the monitor on or off. The power indicator light will illuminate when the monitor is on.
4.2 On-Screen Display (OSD) Menu Navigation
The monitor features a joystick-style button on the back for navigating the OSD menu.
- Press the joystick button to open the OSD menu.
- Move the joystick up/down/left/right to navigate through menu options.
- Press the joystick button again to select an option or confirm a setting.
- Move the joystick left or right to adjust values.
- To exit the OSD menu, navigate to the "Exit" option or hold the joystick button for a few seconds.
4.3 Input Source Selection
To switch between connected devices (e.g., PC via DisplayPort, console via HDMI):
- Open the OSD menu.
- Navigate to the "Input" or "Source" menu.
- Select the desired input (e.g., DP, HDMI1, HDMI2).
4.4 Picture Settings
Adjust display settings through the OSD menu for optimal viewing. Common settings include:
- Brightness: Adjusts the overall luminance of the screen.
- Contrast: Controls the difference between the brightest and darkest areas of the image.
- Color Temperature: Changes the warmth or coolness of the display colors.
- Aspect Ratio: Selects the display ratio (e.g., 16:9, 4:3).
- Sharpness: Adjusts the clarity of image details.
4.5 Gaming Features
The monitor includes features designed to enhance your gaming experience. Access these through the OSD menu.
- Adaptive Sync (FreeSync/G-Sync Compatible): Enable this feature to synchronize the monitor's refresh rate with your graphics card's frame rate, eliminating screen tearing and stuttering. Ensure your graphics card supports FreeSync or G-Sync.
- Dark Balance: Adjusts the gamma levels in dark areas of the screen, making hidden objects or enemies more visible without overexposing bright areas.
- Game Crosshair: Activates an on-screen crosshair for improved aiming accuracy in games.
- Game Modes (FPS/RTS): Pre-calibrated display settings optimized for specific game genres.

Figure 4.1: Smoother and Faster Gaming Visuals

Figure 4.2: Game Crosshair Feature

Figure 4.3: FreeSync Technology in Action
4.6 Eye Care Features
- Flicker-Free: This technology reduces screen flickering, which can cause eye strain and headaches, especially during prolonged use.
- Blue Light Filter: Reduces the emission of harmful blue light, helping to protect your eyes and improve sleep quality. This feature can be adjusted or enabled/disabled via the OSD menu.
5. Maintenance
5.1 Cleaning the Monitor
- Always unplug the monitor from the power outlet before cleaning.
- Use a soft, lint-free cloth slightly dampened with water or a mild, non-abrasive screen cleaner.
- Do not spray cleaner directly onto the screen. Apply it to the cloth first.
- Avoid using alcohol, ammonia, or abrasive cleaners, as these can damage the screen surface.
- Wipe the screen gently to remove dust and smudges.
5.2 General Care
- Keep the monitor away from direct sunlight, excessive heat, or humidity.
- Ensure adequate ventilation around the monitor to prevent overheating.
- Avoid placing heavy objects on the monitor or its cables.
- Do not attempt to disassemble or repair the monitor yourself. Refer to qualified service personnel.
6. Troubleshooting
If you encounter issues with your monitor, refer to the following common troubleshooting steps.
- No Power:
- Ensure the power cable is securely connected to both the monitor and the power outlet.
- Verify the power adapter is functioning correctly.
- Try a different power outlet.
- No Signal:
- Check that the video cable (DisplayPort or HDMI) is securely connected to both the monitor and your computer/device.
- Ensure the correct input source is selected in the monitor's OSD menu.
- Verify your computer/device is powered on and outputting a video signal.
- Try a different video cable or port.
- Image Flickering or Distorted:
- Check the video cable for damage or loose connections.
- Ensure your graphics card drivers are up to date.
- Adjust the refresh rate settings on your computer.
- Disable Adaptive Sync temporarily to see if the issue persists.
- Colors are Incorrect:
- Reset the monitor's color settings to factory defaults via the OSD menu.
- Adjust color temperature and other color settings.
- Ensure the video cable is properly connected.
If the problem persists after trying these steps, please contact KOORUI customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | MG24H3F |
| Screen Size | 23.8 Inches |
| Panel Type | IPS |
| Resolution | FHD (1920 x 1080) |
| Aspect Ratio | 16:9 |
| Refresh Rate | 165 Hz |
| Response Time | 1 ms (GTG) |
| Contrast Ratio | 1000:1 |
| Brightness | 250 cd/m² |
| Viewing Angle | 178° (Horizontal/Vertical) |
| Color Gamut | 99% sRGB |
| Connectivity | 2x HDMI 1.4, 1x DisplayPort 1.2, 1x Audio Out |
| Adaptive Sync | FreeSync (G-Sync Compatible) |
| VESA Compatibility | 75 x 75 mm |
| Tilt Adjustment | -5° to 20° |
| Power Consumption | 30 Watt |
| Dimensions (W x H x D with stand) | 541.93mm x 427.8mm x 229.17mm (approximate, based on image) |
| Weight | 9.38 Pounds (approx. 4.25 kg) |
| UPC | 739406175950 |

Figure 7.1: Monitor Dimensions

Figure 7.2: Product Data Sheet (EPREL Link: https://eprel.ec.europa.eu/qr/1366274)

Figure 7.3: Energy Label (EPREL Link: https://eprel.ec.europa.eu/qr/1366274)
8. Warranty and Support
8.1 Manufacturer's Warranty
The KOORUI 24-inch 165Hz 1080p IPS Gaming Monitor comes with a 3-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
For detailed warranty terms and conditions, refer to the warranty information provided with your product or contact KOORUI customer support.
8.2 Customer Support
If you have any questions, require technical assistance, or need to report a missing/damaged accessory, please contact KOORUI customer support. Our team is available to assist you.
- Support Availability: 24 hours a day
- Contact Information: Please refer to the contact details provided on the KOORUI official website or your product packaging.