ASUS 90LM09M0-B01370

ASUS ROG Strix XG259QNS Gaming Monitor User Manual

Model: 90LM09M0-B01370

Introduction

Thank you for choosing the ASUS ROG Strix XG259QNS Gaming Monitor. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your new monitor. Please read this manual thoroughly before using the product to ensure proper and safe operation.

The ASUS ROG Strix XG259QNS is a high-performance gaming monitor designed for eSports, featuring a 24.5-inch FHD (1920x1080) Fast IPS display with an overclockable refresh rate of up to 380 Hz and a rapid 0.3ms (min.) response time. It incorporates ASUS Fast IPS technology, Extreme Low Motion Blur Sync (ELMB SYNC), and AMD FreeSync™ Premium technology for an exceptionally fluid and tear-free gaming experience. Additionally, it includes practical features like a mobile phone socket in the base and a ¼-inch tripod socket on the stand for streaming setups.

Setup

Unboxing and Assembly

Carefully remove all components from the packaging. Ensure all parts are present before proceeding with assembly.

ASUS ROG Strix XG259QNS Monitor showing various ergonomic adjustments and rear view

Figure 1: Product Design and Ergonomic Adjustments. The image displays the ASUS ROG Strix XG259QNS monitor from various angles, highlighting its ergonomic design. It shows the monitor's ability to tilt, swivel, pivot, and adjust height, along with a view of the rear panel and stand. This design allows for optimal viewing comfort and flexibility.

Connecting Your Monitor

Connect the monitor to your computer using the appropriate cables.

Front view of ASUS ROG Strix XG259QNS Gaming Monitor

Figure 2: Front View of the ASUS ROG Strix XG259QNS Monitor. This image shows the monitor's front, displaying its 24.5-inch screen with key features highlighted, such as 380Hz overclockable refresh rate, 0.3ms response time, Fast IPS panel, AMD FreeSync Premium, and HDR support. The "Republic of Gamers" logo is prominently featured.

Operating Your Monitor

Basic Operation

Once connected, power on your computer and the monitor. The monitor should automatically detect the input signal. You can use the OSD (On-Screen Display) joystick and buttons located on the back or bottom of the monitor to navigate settings.

Key Features and Technologies

Comparison of 380Hz refresh rate versus conventional refresh rate on a gaming monitor

Figure 3: Blazingly-Fast 380 Hz Refresh Rate. This image visually compares the motion clarity between a 380Hz refresh rate monitor and a conventional monitor, demonstrating the significant reduction in motion blur and ghosting at higher refresh rates, crucial for fast-paced eSports.

Infographic showing top 10 features of ASUS ROG Strix XG259QNS monitor

Figure 4: Top Features Overview. An infographic summarizing key features of the monitor, including 24.5" 1080p resolution, sRGB 110%, 380Hz OC refresh rate, ELMB Sync, Fast IPS, 0.3ms GTG response time, DisplayWidget Center, AMD FreeSync Premium, GamingAI features (Dynamic Crosshair, Dynamic Shadow Boost, Variable OD 2.0), and product design with phone holder.

DisplayWidget Center

The DisplayWidget Center software allows for easy access to OSD and monitor settings directly from your desktop using a mouse. This provides a more intuitive way to adjust various display parameters, including GameVisual modes, color settings, and system settings.

Screenshot of ASUS DisplayWidget Center software interface

Figure 5: Effortless Settings Customization with DisplayWidget Center. This image shows the user interface of the ASUS DisplayWidget Center application, demonstrating how users can easily adjust monitor settings such as GameVisual modes (RTS/RPG, FPS, Cinema, Scenery, Racing, sRGB, MOBA, User), brightness, contrast, saturation, hue, color temperature, and other image settings directly from their computer.

Additional Features

ASUS ROG Strix XG259QNS monitor with a mobile phone placed in its base

Figure 6: Integrated Phone Holder. This image highlights the mobile phone socket located in the monitor's base, demonstrating how a smartphone can be conveniently placed there for easy viewing of notifications or content.

Comparison images showing Dynamic Crosshair and Dynamic Shadow Boost features

Figure 7: AI-Powered Advantage. This image illustrates the benefits of AI-powered gaming features. It shows "Dynamic Crosshair" with a before-and-after comparison of a crosshair overlay, and "Dynamic Shadow Boost" with a before-and-after comparison of improved visibility in dark in-game areas.

Color calibration report for ASUS ROG Strix XG259QNS monitor

Figure 8: Vivid Colors, Factory Checked. This image displays a color calibration report, indicating that the monitor's sRGB color gamut is 110% and that it has been factory-calibrated to ensure accurate and vivid color reproduction.

Maintenance

Proper maintenance ensures the longevity and optimal performance of your monitor.

Troubleshooting

If you encounter issues with your monitor, refer to the following common problems and solutions.

ProblemPossible CauseSolution
No image on screenPower cable loose; Video cable not connected; Incorrect input source selected.Check power connections; Ensure video cable (DisplayPort/HDMI) is securely connected to both monitor and computer; Use OSD to select correct input source.
Image is blurry or distortedIncorrect resolution; Cable quality issue.Set display resolution to 1920x1080; Try a different high-quality DisplayPort or HDMI cable.
No sound (if using monitor speakers)Volume too low; Incorrect audio output device selected on PC.Adjust monitor volume via OSD; Select the monitor as the default audio output device in your computer's sound settings.
Monitor not reaching 380HzGraphics card limitation; Cable limitation; Driver issue.Ensure your graphics card supports 380Hz at 1080p; Use a certified DisplayPort 1.4 cable; Update graphics drivers to the latest version.

For further assistance, please refer to the ASUS support website or contact customer service.

Specifications

FeatureDetail
Model Number90LM09M0-B01370
Screen Size24.5 Inches (25 Inches Standing Screen Display Size)
ResolutionFHD 1080p (1920 x 1080 Pixels)
Refresh RateUp to 380 Hz (Overclocked)
Response Time0.3ms (min.) GTG
Panel TypeFast IPS
Aspect Ratio16:9
Brightness400 cd/m²
ConnectivityDisplayPort, HDMI, 3 x USB Ports
Product Dimensions8.58 x 21.97 x 19.37 inches
Item Weight12.28 pounds
ManufacturerASUS
Date First AvailableDecember 31, 2024

Warranty and Support

Warranty Information

Your ASUS ROG Strix XG259QNS Gaming Monitor comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging or visit the official ASUS website for detailed warranty terms and conditions specific to your region. Keep your proof of purchase for warranty claims.

Customer Support

For technical support, product inquiries, or service requests, please visit the official ASUS support website: www.asus.com/support/. You may also find FAQs and driver downloads on their website.

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