XG259CS Computer Monitor

Product Information

Specifications

• Product Name: ROG Strix XG259CS Series Gaming LCD Monitor
• Manufacturer: ASUS
• Display Type: Widescreen LCD
• Features: Broad, bright, crystal-clear display
• Package Contents: Refer to the user manual

Product Usage Instructions

Package Contents Check

Check your package for the following items:

• LCD monitor
• Monitor base
• Quick start guide
• Warranty card
• Power adapter
• Power cord
• DP cable
• HDMI cable (optional)
• USB Type-C cable (optional)
• ROG sticker
• ROG pouch

If any item is damaged or missing, contact your retailer
immediately.

Monitor Introduction

Front/Side View

The front/side view includes various buttons and indicators:

1. (5-way) button

2. Button

3. Shortcut 1 button

4. Shortcut 2 button

5. Power button/power indicator:

   • Status: White (ON), Amber (Standby mode/No signal), OFF
     (OFF)

6. Phone holder

Back View

The back view includes the DC-IN port to connect the power
cord.

Frequently Asked Questions (FAQ)

Q: What should I do if any package item is damaged or

missing?

A: Contact your retailer immediately for assistance regarding
damaged or missing items from the package.

Q: Where can I find additional product information and

updates?

A: You can refer to ASUS websites, optional documentation
included in the package, and the provided links for more
information and software updates.

Q: How do I responsibly recycle ASUS products?

A: ASUS provides recycling and takeback programs to help
customers responsibly recycle products, batteries, and packaging
materials. Visit the ASUS website for detailed recycling
information in different regions.

First Edition June 2024
Copyright © 2024 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”). Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing. ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.
ii

Contents
Notices…………………………………………………………………………………………… iv Safety information ………………………………………………………………………….. vi Care & Cleaning …………………………………………………………………………….. vii Takeback Services………………………………………………………………………… viii Product information for EU energy label………………………………………… viii Chapter 1: Product introduction 1.1 Welcome! ………………………………………………………………………… 1-1 1.2 Package contents………………………………………………………………. 1-1 1.3 Monitor introduction ………………………………………………………….. 1-2
1.3.1 Front/side view………………………………………………………. 1-2 1.3.2 Back view……………………………………………………………… 1-3 1.3.3 Other Function(s) …………………………………………………… 1-4 Chapter 2: Setup 2.1 Assembling the monitor arm/base ……………………………………… 2-1 2.2 Cable management ……………………………………………………………. 2-1 2.3 Adjusting the monitor………………………………………………………… 2-2 2.4 Detaching the arm (for VESA wall mount) …………………………… 2-3 2.5 Connecting the cables……………………………………………………….. 2-4 2.6 Turning on the monitor………………………………………………………. 2-4 Chapter 3: General instructions 3.1 OSD (On-Screen Display) menu ………………………………………… 3-1 3.1.1 How to reconfigure…………………………………………………. 3-1 3.1.2 OSD function introduction ……………………………………….. 3-2 3.2 Specifications summary ……………………………………………………. 3-8 3.3 Outline dimensions………………………………………………………….. 3-10 3.4 Troubleshooting (FAQ)…………………………………………………….. 3-11 3.5 Supported operating mode ………………………………………………. 3-12
iii

Notices
Federal Communications Commission Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: · This device may not cause harmful interference, and · This device must accept any interference received including interference that
may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
Canadian Department of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003. This Class B digital apparatus meets all requirements of the Canadian Interference – Causing Equipment Regulations. Cet appareil numérique de la classe B respecte toutes les exigences du Réglement sur le matériel brouiller du Canada.
iv

Safety information
· Before setting up the monitor, carefully read all the documentation that came with the package.
· To prevent fire or shock hazard, never expose the monitor to rain or moisture. · Never try to open the monitor cabinet. The dangerous high voltages inside the
monitor may result in serious physical injury. · If the power supply is broken, do not try to fix it by yourself. Contact a qualified
service technician or your retailer. · Before using the product, make sure all cables are correctly connected and the
power cables are not damaged. If you detect any damage, contact your dealer immediately. · Slots and openings on the back or top of the cabinet are provided for ventilation. Do not block these slots. Never place this product near or over a radiator or heat source unless proper ventilation is provided. · The monitor should be operated only from the type of power source indicated on the label. If you are not sure of the type of power supply to your home, consult your dealer or local power company. · Use the appropriate power plug which complies with your local power standard. · Do not overload power strips and extension cords. Overloading can result in fire or electric shock. · Avoid dust, humidity, and temperature extremes. Do not place the monitor in any area where it may become wet. Place the monitor on a stable surface. · Unplug the unit during a lightning storm or if it will not be used for a long period of time. This will protect the monitor from damage due to power surges. · Never push objects or spill liquid of any kind into the slots on the monitor cabinet. · To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100-240V AC. · If you encounter technical problems with the monitor, contact a qualified service technician or your retailer. · Adjustment of the volume control as well as the equalizer to other settings than the center position may increase the ear-/headphones output voltage and therefore the sound pressure level. · The adapter is only used for this monitor, do not use it for other purpose. Your device uses one of the following power supplies: – Manufacturer: Delta Electronics Inc., Model: ADP-65GD B · Ensure to connect the power cord to a socket-outlet with earthing connection. · The supplied power adapter and/or power cable are designed to use with the product only. Do not use with other products.
v

This symbol of the crossed out wheeled bin indicates that the product (electrical, electronic equipment, and mercury-containing button cell battery) should not be placed in municipal waste. Please check local regulations for disposal of electronic products.
AEEE yönetmeliine uygundur
Care & Cleaning
· Before you lift or reposition your monitor, it is better to disconnect the cables and power cord. Follow the correct lifting techniques when positioning the monitor. When lifting or carrying the monitor, grasp the edges of the monitor. Do not lift the display by the stand or the cord.
· Cleaning. Turn your monitor off and unplug the power cord. Clean the monitor surface with a lint-free, non-abrasive cloth. Stubborn stains may be removed with a cloth dampened with mild cleaner.
· Avoid using a cleaner containing alcohol or acetone. Use a cleaner intended for use with the monitor. Never spray cleaner directly on the screen, as it may drip inside the monitor and cause an electric shock.
The following symptoms are normal with the monitor:
· The screen may flicker during the initial use due to the nature of the fluorescent light. Turn off the Power Switch and turn it on again to make sure that the flicker disappears.
· You may find slightly uneven brightness on the screen depending on the desktop pattern you use.
· When the same image is displayed for hours, an afterimage of the previous screen may remain after switching the image. The screen will recover slowly or you can turn off the Power Switch for hours.
· When the screen becomes black or flashes, or cannot work anymore, contact your dealer or service center to fix it. Do not repair the screen by yourself!
Conventions used in this guide WARNING: Information to prevent injury to yourself when trying to complete a task. CAUTION: Information to prevent damage to the components when trying to complete a task. IMPORTANT: Information that you MUST follow to complete a task.
NOTE: Tips and additional information to aid in completing a task.
vi

Where to find more information Refer to the following sources for additional information and for product and software updates. 1. ASUS websites
The ASUS websites worldwide provide updated information on ASUS hardware and software products. Refer to http://www.asus.com 2. Optional documentation Your product package may include optional documentation that may have been added by your dealer. These documents are not part of the standard package. 3. About Flicker https://www.asus.com/Microsite/display/eye_care_technology/
Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for our customers to be able to responsibly recycle our products, batteries and other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for detail recycling information in different region.
Product information for EU energy label
vii

viii

1.1 Welcome!
Thank you for purchasing the ROG gaming monitor! The latest widescreen LCD monitor from ASUS provides a broader, brighter and crystal-clear display, plus a host of features that enhance your viewing experience. With these features, you can enjoy the convenience and delightful visual experience that the monitor brings to you!
1.2 Package contents
Check your package for the following items: LCD monitor Monitor base Quick start guide Warranty card Power adapter Power cord DP cable HDMI cable (optional) USB Type-C cable (optional) ROG sticker ROG pouch If any of the above items is damaged or missing, contact your retailer immediately.
If you need to replace the power cord or the connection cable(s), please contact ASUS customer service.

ROG Strix XG259CS Series Gaming LCD Monitor

1-1

1.3 Monitor introduction
1.3.1 Front/side view
1 2 3 4 5
6

( 5-way) button:

· Turns on the OSD menu. Enacts the selected OSD menu item.

· Increases/Decreases values or moves your selection up/down/left/right.

· Turns on the OSD menu when the monitor enters standby mode or displays the “NO SIGNAL” message.

· Move and hold the button downward for over 5 seconds to enable/disable the Key Lock function.

button

· Exits the OSD menu item.

· Turns on the OSD menu when the monitor enters standby mode or displays the “NO SIGNAL” message.

Shortcut 1 button:

· Default: GamePlus.

· To change the shortcut function, go to the MyFavorite > Shortcut > Shortcut 1 menu.

· Turns on the OSD menu when the monitor enters standby mode or displays the “NO SIGNAL” message.

Shortcut 2 button:

· Default: GameVisual.

1-2

Chapter 1: Product introduction

· To change the shortcut function, go to the MyFavorite > Shortcut > Shortcut 2 menu.

· Turns on the OSD menu when the monitor enters standby mode or displays the “NO SIGNAL” message.

Power button/power indicator

· Turns the monitor on/off.

· The color definition of the power indicator is as the below table.

Status White Amber OFF

Description ON Standby mode/No signal OFF

6. Phone holder
· The size of the phone holder is 12.7 x 171.1 mm. Make sure your device fits into the groove.

1.3.2 Back view

1. DC-IN port. This port connects the power cord.
2. HDMI port. This port is for connection with an HDMI 2.0 compatible device.
3. DisplayPort. This port is for connection with a DisplayPort compatible device.
4. USB 3.2 Gen 1 Type-C (supports DP Alt mode). This port is for connection with a DisplayPort/USB Type-C compatible device. This port is also for connection with a USB Type-C cable, which supports USB power delivery (depending on the signal source).

ROG Strix XG259CS Series Gaming LCD Monitor

1-3

This monitor is Super-Speed USB 3.2 Gen 1 compatible (5Gbps). The port offer 7.5W power delivery with output voltage of 5V/1.5A.
5. Earphone jack. This port is only available when an HDMI/DisplayPort/USB Type-C cable is connected.
6. Kensington lock slot. 7. Control buttons.
1.3.3 Other Function(s)
· Tripod socket atop 1/4-inch tripod socket on the monitor stand allows you to mount a camera, audio equipment or additional display.
· HDR The monitor supports HDR format. When detecting HDR content, an “HDR ON” message will pop up.
When displaying HDR content, the following function(s) are not available: ELMB Setup, GameVisual, Shadow Boost, Contrast, ASCR, Blue Light Filter, Display Color Space, Color Temp., Saturation, Six-axis Saturation, Gamma, Power Saving Mode, DisplayPort 1.2.

1-4

Chapter 1: Product introduction

2.1 Assembling the monitor arm/base
1. Insert the base into the arm. 2. Fix the base to the arm by fastening the bundled screw. 3. Attach the arm into the monitor.
2 2 1
1
We recommend that you cover the table surface with soft cloth to prevent damage to the monitor.
Base screw size: M6 x 15 mm.
2.2 Cable management
You can organize the cables with the help of the cable management hole. · Arranging the cables

ROG Strix XG259CMS Series Gaming LCD Monitor

2-1

2.3 Adjusting the monitor
· For optimal viewing, we recommend that you look at the full face of the monitor, then adjust the monitor to the angle that is most comfortable for you.
· Hold the stand to prevent the monitor from falling when you change its angle. · The recommended adjusting angle is +20° to -5° (for tilt)/+45° to -45° (for
swiveling/120 mm (for height adjustment)/+90° (for portrait view).
-5° ~ +20°

(Tilt)
45°

120mm
(Height adjustment)
45°

(Swivel) Pivoting the monitor
1. Lift the monitor to the highest position. 2 Tilt the monitor to its maximum angle. 3. Pivot the monitor clockwise or counterclockwise to the angle you need.
0° 90°

0° 90°
It is normal that the monitor slightly shakes while you adjust the viewing angle.

2-2

Chapter 2: Setup

2.4 Detaching the arm (for VESA wall mount)
The detachable arm of this monitor is specially designed for VESA wall mount. To detach the arm: 1. Have the front of the monitor face down on a table. 2. Press the release button to detach the stand (arm and base) from the
monitor.
2
1
We recommend that you cover the table surface with soft cloth to prevent damage to the monitor.
· The VESA wall mount kit (100 x 100 mm) is purchased separately. · Use only the UL Listed Wall Mount Bracket with minimum weight/load
22.7kg (Screw size: M4 x 10 mm)

ROG Strix XG259CMS Series Gaming LCD Monitor

2-3

2.5 Connecting the cables
Connect the cables as the following instructions:

· To connect the power cord: a. Connect the power adapter securely to the monitor’s DC input. b. Connect one end of the power cord to the power adapter and the other end to a power outlet.
· To connect the HDMI/DisplayPort/USB Type-C cable: a. Plug one end of the HDMI/DisplayPort/USB Type-C cable to the monitor’s HDMI/DisplayPort/USB Type-C jack. b. Connect the other end of the HDMI/DisplayPort/USB Type-C cable to your device’s HDMI/DisplayPort/USB Type-C jack. When these cables are connected, you can choose the desired signal from the Input Select item in the OSD menu.
If you need to replace the power cord or the connection cable(s), please contact ASUS customer service.
· To use the earphone: connect the audio cable to the monitor’s earphone jack.
2.6 Turning on the monitor
Press the power button . See page 1-3 for the location of the power button. The power indicator lights up in white to show that the monitor is ON.

2-4

Chapter 2: Setup

3.1 OSD (On-Screen Display) menu

3.1.1

How to reconfigure

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Variable OD

10

Gaming

Variable Refresh Rate

Image

ELMB Setup GamePlus

Color

GameVisual Shadow Boost

ASUS DisplayWidget Center Input Select

MyFavorite

Volume 50

Back

Enter

Exit

1. Press the ( ) button to activate the OSD menu.

2. Move the ( ) button up/down to navigate through the functions.

Highlight the desired function and press the ( ) button to activate it. If

the function selected has a sub-menu, move the ( ) button up/down again to navigate through the sub-menu functions. Highlight the desired sub-

menu function and press the right to activate it.

( ) button or move the

( ) button

3. Move the function.

( ) button up/down to change the settings of the selected

4. To exit and save the OSD menu, press the button or move the ( ) left repeatedly until the OSD menu disappears. To adjust other functions, repeat steps 1-3.

ROG Strix XG259CS Series Gaming LCD Monitor

3-1

3.1.2 OSD function introduction

1. Gaming

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Variable OD

10

Gaming

Variable Refresh Rate

Image

ELMB Setup GamePlus

Color

GameVisual Shadow Boost

ASUS DisplayWidget Center Input Select

MyFavorite

Volume 50

Back

Enter

Exit

· Variable OD: Improves the gray level response time of the LCD panel. This function is not available when ELMB SYNC is enabled.

· Variable Refresh Rate: Allows an Variable Refresh Rate supported graphics source to dynamically adjust display refresh rate based on typical content frame rates for power efficient, virtually stutter free and low-latency display update.
This function is only available when the following settings are disabled: ELMB, Aspect Control.
· Variable Refresh Rate can only be activated within 48Hz~180Hz. · For supported GPUs, minimum PC system and driver requirements,
please contact the GPU manufactures.
· ELMB Setup: ELMB: ELMB can only be activated when Variable Refresh Rate is OFF and the refresh rate is 100Hz, 120Hz, or 180Hz. This function eliminates screen tearing, reduces ghosting and motion blur when playing games. The function includes 5-level clarity and position adjustment.
To activate ELMB, turn off the following settings first: Variable Refresh Rate, Aspect Control, Blue Light Filter, ASCR.

• ELMB SYNC: Allows you to turn on the function when Variable Refresh Rate is ON. This function eliminates screen tearing, reduces ghosting and motion blur when playing games.
  · GamePlus: The GamePlus function provides a toolkit and creates a better gaming environment for users when playing different types of games. * FPS Counter: The FPS (frames per second) counter lets you know how smooth the game is running.

3-2

Chapter 3: General Instructions

• Crosshair: The crosshair overlays with 6 different crosshair options letting you choose the one that best suits the game you’re playing.
• Timer: You can position the timer on the upper left corner of the display so you can keep track of the gaming time.
• Stopwatch: You can position the stopwatch on the upper left corner of the display so you can keep track of the gaming time.
• Display Alignment: Display Alignment displays alignment lines on 4 sides of the screen, serving as an easy and handy tool for you to line up multiple monitors perfectly.
  · GameVisual: The GameVisual function helps you select among different picture modes in a convenient way.
• Scenery Mode: This is the best choice for scenery photo displaying with GameVisualTM Video intelligence Technology.
• Racing Mode: This is the best choice for racing game playing with GameVisualTM Video intelligence Technology.
• Cinema Mode: This is the best choice for movie watching with GameVisualTM Video intelligence Technology.
• RTS/RPG Mode: This is the best choice for Real-Time Strategy (RTS)/ Role-Playing Game (RPG) playing with GameVisualTM Video intelligence Technology.
• FPS Mode: This is the best choice for First Person Shooter game playing with GameVisualTM Video intelligence Technology.
• sRGB Mode: This is the best choice for viewing photos and graphics from PCs.
• MOBA Mode: This is the best choice for multiplayer online battle arena game playing with GameVisualTM Video intelligence Technology.
• Night Vision: This is the best choice for dark scenery playing with GameVisualTM Video intelligence Technology.
• User Mode: More items are adjustable in the Color menu. · In the MOBA Mode, the following function(s) are not user-configurable:
  Shadow Boost, VividPixel, Saturation.
  · In the Night Vision, the following function(s) are not user-configurable: Saturation.
  · In the sRGB Mode, the following function(s) are not userconfigurable: Shadow Boost, Contrast, ASCR, Blue Light Filter, Display Color Space, Color Temp.,Saturation, Gamma.
  · Shadow Boost: Dark color enhancement adjusts monitor gamma curve to enrich the dark tones in an image, making dark scenes and objects much easier to be seen.
  This function is only available in Scenery Mode, Racing Mode, Cinema Mode, RTS/RPG Mode, FPS Mode, Night Vision, User Mode.

ROG Strix XG259CS Series Gaming LCD Monitor

3-3

· ASUS DisplayWidget Center: Displays a QR code for you to access the information about ASUS DisplayWidget Center.
2. Image

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Brightness

15

Gaming

Contrast

80

VividPixel

50

Image

HDR Setting

Color

ASCR Aspect Control

Blue Light Filter Input Select

MyFavorite

Volume 50

Back

Enter

Exit

· Brightness: The adjusting range is from 0 to 100.

This function is only available when the following setting(s) are disabled: ELMB Setup.

· Contrast: The adjusting range is from 0 to 100. · VividPixel: This function enhances the outline of the displayed picture and
generates high-quality images on screen. · HDR Setting: Contains 3 HDR modes, including Gaming HDR, Cinema HDR
and Console HDR. The HDR brightness can be adjusted when the Brightness Adjustable function is enabled.
When displaying HDR content, the following function(s) are not available: ELMB Setup, GameVisual, Shadow Boost, Contrast, ASCR, Blue Light Filter, Display Color Space, Color Temp., Saturation, Six-axis Saturation, Gamma, Power Saving Mode, DisplayPort 1.2.
· ASCR: Turns on/off the ASCR (ASUS Smart Contrast Ratio) function.
This function is only available when the following setting(s) are disabled: ELMB Setup.

· Aspect Control: Adjust the aspect ratio to 16:9 or Square to enjoy different gaming scenario.

• 16:9: Simply choose Fill Up under Full for better FPS gaming size; or you can choose Pixel by Pixel under Windows Display setting.
• Square: Provides multiple square aspect ratio choices with different screen sizes, including Full, Equivalent and Pixel by Pixel.
  This function is only available when the following setting(s) are disabled: Variable Refresh Rate, ELMB Setup.

· Blue Light Filter:

3-4

Chapter 3: General Instructions

· OFF: No change.
· Level 1~Level 4: The higher the level, the less blue light is scattered. When Blue Light Filter is activated, the default settings of Racing Mode will be automatically imported. Between Level 1 to Level 3, the Brightness function is user-configurable. Level 4 is an optimized setting. It is in compliance with TUV Low Blue Light Certification. The Brightness function is not user- configurable.
· Please refer to the following to alleviate eye strains:
· Users should take some time away from the display if working for long hours. It is advised to take short breaks (at least 5 mins) after around 1 hour of continuous working at the computer. Taking short and frequent breaks is more effective than a single longer break.
· To minimize eye strain and dryness in your eyes, you should rest the eye periodically by focusing on objects that are far away.
· Eye exercises can help to reduces eye strain. Repeat these exercises often. If eye strain continues please consult a physician. Eye exercises: (1) Repeating look up and down (2) Slowly roll your eyes (3) Move your eyes diagonal.
· High energy blue light may lead to eye strain and AMD (Age-Related Macular Degeneration). Blue light Filter reduces 70% (max.) harmful blue light to avoid CVS (Computer Vision Syndrome).

3. Color

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Gaming

Display Color Space Color Temp.

Saturation

50

Image

Six-axis Saturation

Color

Gamma

Input Select

MyFavorite

Volume 50

Back

Enter

Exit

· Display Color Space: Selects the color space for the monitor color output. · Color Temp.: Contains 8 modes including 4000K, 5000K, 6500K, 7500K , 8200K,
9300K, 10000K and User. · Saturation: The adjusting range is from 0 to 100. · Six-axis Saturation: Adjusts the saturation for R, G, B, C, M, Y.
· Gamma: Allows you to set the color mode to 1.8, 2.0, 2.2, 2.4 or 2.6.

ROG Strix XG259CS Series Gaming LCD Monitor

3-5

4. Input Select In this function, you can select your desired input source.

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Gaming Image

Auto Input Detection USB-C DisplayPort HDMI

Color

Input Select

MyFavorite

Volume 50

Back

Enter

Exit

· Auto Input Detection: When enabled, the system will automatically select the latest inserted I/O port.
· USB-C/DisplayPort/HDMI: Manually selects the input source.

5. MyFavorite

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Gaming

Shortcut Customized Setting

Image

Color

Input Select

MyFavorite

Volume 50

Back

Enter

Exit

· Shortcut: · Shortcut 1/Shortcut 2: Sets the shortcut functions for shortcut buttons.

When a certain function is selected or activated, your shortcut button may not support. Available function choices: GamePlus, GameVisual, Variable OD, Brightness, Mute, Shadow Boost, Contrast, Input Select, HDR Setting, Blue Light Filter, Color Temp., Volume (Earphone Out), Customized Setting-1, Customized Setting-2.

· Customized Setting: · Setting 1/Setting 2: Loads/Saves all settings on the monitor.

3-6

Chapter 3: General Instructions

6. System Setup

ROG STRIX XG259CS 1920×1080 180Hz

GameVisual Racing Mode

Input Select DisplayPort

HDR OFF

Language System Setup
Sound
Power Indicator
Power Key Lock
Key Lock
Power Setting
OSD Setup
DisplayPort Stream

Volume 50

Back

Enter

Exit

· Language: There are 23 languages for your selection, including English, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Czech, Croatian, Polish, Romanian, Hungarian, Turkish, Simplified Chinese, Traditional Chinese, Japanese, Korean, Thai, Indonesian, Persian, Ukrainian, Vietnamese.
· Sound: Sets the sound related settings from this menu. Volume (Earphone Out): The adjusting range is from 0 to 100. Mute: Toggles the monitor sound between on and off.
· Power Indicator: Turns the power LED indicator on/off. · Power Key Lock: Enables or disables the power key. · Key Lock: To disable all function keys. Move and hold the (5-way) button
downward for over 5 seconds to cancel the key lock function. · Power Setting:
· Standard Mode: Standard mode setting may result in higher power consumption.
· Power Saving Mode: Power saving mode may cause limited luminance performance.
· OSD Setup: · Adjusts the OSD position. · Adjusts the OSD timeout from 10 to 120 seconds. · Adjusts the OSD background from opaque to transparent. · Enables or disables the DDC/CI function.
· DisplayPort Stream: Compatibility with graphic card. Select DisplayPort 1.2, DisplayPort 1.4 by graphic card DP version.
· Information: Shows the monitor information.
· All Reset: Selecting “Yes” allows you to restore the default settings.

ROG Strix XG259CS Series Gaming LCD Monitor

3-7

3.2 Specifications summary

Panel type Panel size Max. resolution Pixel pitch Brightness (Typ.) Contrast ratio (Typ.) Viewing angle(H/V) CR>10 Display colors Response time Color temperature selection Analog input Digital input
Earphone jack Audio input Speaker (Built-in) USB 3.2 Gen 1 port Colors Power LED Tilt Pivot Swivel Height adjustment VESA wall mount Kensington lock Voltage rating
Power consumption
Temperature (Operating) Temperature (Non-operating) Dimensions (W x H x D)
Weight (Esti.)
Multi-languages

TFT LCD
24.5″W (62.2 cm) wide screen
1920 x 1080
0.2832 mm x 0.2832 mm 400 cd/m2
1000:1 178°/178° 16.7 M
0.4ms (GTG, min.); 1 ms (GTG)
8 color temperatures
No
DisplayPort v1.4 x 1, HDMI v2.0 x 1, USB Type-C x 1
Yes
No
No
No
Black
White (On)/Amber (Standby) +20°~ -5° +/-90° +45°~ -45° 120 mm
100 x 100 mm
Yes
AC: 100~240V DC: 19.0 V, 3.42 A (AC adapter)
Power On: < 20 W**, Standby: < 0.5 W, Power Off: < 0.3 W 0°C~40°C -20°C~+60°C
557.7 x 332.4 x 57 mm (without stand) 557.7 x 372.1 x 218.3 mm (with stand, lowest) 557.7 x 492.1 x 218.3 mm (with stand, highest) 795 x 172 x 482 mm (package)
3.2 kg (without stand); 5.9 kg (Net); 8.3 kg (Gross)
23 languages (English, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Czech, Croatian, Polish, Romanian, Hungarian, Turkish, Simplified Chinese, Traditional Chinese, Japanese, Korean, Thai, Indonesian, Persian, Ukrainian, Vietnamese)

3-8

Chapter 3: General Instructions

Accessories Compliance and standards

Quick start guide, warranty card, power adapter, power cord, DP cable, HDMI cable (optional), USB Type-C cable (optional), ROG sticker, ROG pouch
cTUVus, FCC, IECS-3, CB, CE, ErP, WEEE, EU Energy Label, UkrSEPRO, Ukarine Energy, CU, CCC, CEL, BSMI, RCM, MEPS, VCCI, PSE, J-MOSS, KCC, Korea MEPS, Vietnam MEPS, CEC, TUV flicker free, TUV low blue light, Windows 10/11 WHQL

*Specifications are subject to change without notice.
**Measuring a screen brightness of 200 nits without audio/USB/Card reader connection.

ROG Strix XG259CS Series Gaming LCD Monitor

3-9

3.3 Outline dimensions

3-10

Chapter 3: General Instructions

3.4

Troubleshooting (FAQ)

Problem

Possible Solution

Power LED is not ON

· Press the button to check if the monitor is in the ON mode.
· Check if the power cord is properly connected to the monitor and the power outlet.

The power LED lights white and there is no · Check if the monitor and the computer are

screen image

in the ON mode.

· Make sure the signal cable is properly

connected the monitor and the computer.

· Inspect the signal cable and make sure

none of the pins are bent.

· Connect the computer with another

available monitor to check if the computer

is properly working.

Screen image is too light or dark

· Adjust the Contrast and Brightness settings via OSD.

Screen image bounces or a wave pattern is · Make sure the signal cable is properly

present in the image

connected to the monitor and the

computer.

· Move electrical devices that may cause

electrical interference.

Screen image has color defects (white does · Inspect the signal cable and make sure

not look white)

that none of the pins are bent.

· Perform All Reset via OSD.

· Adjust the R/G/B color settings or select

the Color Temperature via OSD.

Brightness decreases after displaying HDR · Turn off the monitor by pressing the power

content for a period of time

button and then turn on the monitor.

· Turn off the monitor by disconnecting the

power cord and then turn on the monitor.

· Reactivate the HDR function on your

device.

ROG Strix XG259CS Series Gaming LCD Monitor

3-11

3.5

Supported operating mode

Resolution Frequency 640 x 480 640 x 480 800 x 600 800 x 600 1024 x 768 1024 x 768 1280 x 720 1280 x 960
1280 x 1024 1440 x 1080 1600 x 900 1728 x 1080 1920 x 1080 1920 x 1080 1920 x 1080 1920 x 1080

Refresh rate 60Hz 75Hz 60Hz 75Hz 60Hz 75Hz 60Hz 60Hz 60Hz 180Hz 60Hz 180Hz 60Hz 100Hz 120Hz 180Hz

3-12

Chapter 3: General Instructions

Video Timing Resolution Frequency 640 x 480p (4:3) 720 x 480p (4:3) 720 x 480p (16:9) 720 x 576p (4:3) 720 x 576p (16:9) 1280 x 720p (16:9) 1280 x 720p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9) 1920 x 1080p (16:9)

Refresh rate 59.94Hz 59.94Hz 59.94Hz 50Hz 50Hz 50Hz 60Hz 24Hz 25Hz 30Hz 50Hz 60Hz 100Hz 120Hz

ROG Strix XG259CS Series Gaming LCD Monitor

3-13

References

• ASUS Global
• ASUS Eye Care Monitors

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>