BenQ LCD Monitor User Manual

Copyright and Disclaimer

Copyright © 2025 by BenQ Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, altered, or translated into any computer language, in any form or by any means, without the prior written permission of BenQ Corporation.

BenQ Corporation disclaims any responsibility or warranty, express or implied, for any damages arising from the use of this manual or the product described herein. BenQ Corporation reserves the right to revise this publication and to make changes to the contents thereof from time to time without obligation to notify any person of such revision or changes.

BenQ's flicker-free technology maintains a stable backlight using DC dimming, which eliminates the primary cause of monitor flickering, thus protecting your eyes. Flicker-free performance may be affected by external factors such as low-quality cables, unstable power supply, signal interference, or poor grounding. (Available on flicker-free models only.)

Product Support

This document aims to provide the most up-to-date and accurate information. It may be updated periodically without prior notice. Visit the BenQ website for the latest version and additional product information. Available file types may vary.

1. Ensure your computer has an internet connection.
2. Visit your local Support.BenQ.com website. Website layout and content may vary by region and country.

• User Manual and related documents
• Drivers and applications
• (EU only) Disassembly information: Available on the user manual download page. This document is based on Regulation (EU) 2019/2021 regarding product repair or recycling. Contact local customer service for servicing during the warranty period. For repairs after the warranty expires, it is recommended to use a professional service and obtain replacement parts from BenQ to ensure compatibility. Do not disassemble the product if you are unsure of the consequences. If disassembly instructions are not found for the product, contact customer service for assistance.

EPREL Registration Numbers: GW2491: 2125650, GW2491E: 2125651, GW2491T: 2125652, GW2791: 2125655, GW2791E: 2125659, GW2791T: 2125661

Frequently Asked Questions Index

Start with topics that interest you.

Setup

• How to set up and turn on the monitor?
• Safety precautions
• Monitor hardware installation

Mounting the Monitor

• How to mount the monitor on the wall?
• Using the monitor mounting kit (sold separately)

Eye Care Features

• How to reduce blue light emission from the screen?
• Usage: Low Blue Light Plus

Menus and Accessories

• How to use the OSD menu?
• Basic menu operations
• Navigating the main menu

Maintenance and Product Support

• How to clean the monitor?
• Maintenance and cleaning
• How to store the monitor when not in use for a long time?
• Removing the monitor stand and base
• Maintenance and cleaning

Need Further Support

• Product support
• Repair, service

Safety Precautions

Electrical Safety Precautions

To achieve the best performance and extend the monitor's lifespan, please observe the following safety precautions:

Environmental Conditions:

• Operating Temperature: 0-40°C
• Operating Humidity: 10-90%
• Operating Altitude: 0-3000m
• Storage Temperature: -20-60°C
• Storage Humidity: 10-60%
• Storage Altitude: 0-12000m

• The AC plug isolates the equipment from the AC power source.
• The power cord serves as a disconnect device for pluggable equipment. The socket-outlet shall be installed near the equipment and shall be easily accessible.
• Operate this product only from the type of power indicated on the label. If you are unsure of the power type, consult your local power company or an electrician.
• Equipment of Class I, Type A, which is pluggable, must be connected to a protective earth.
• Use a power cord that is approved and meets at least the H03VV-F, H05VV-F, 2G, or 3G standard, with a cross-sectional area of 0.75 mm².
• Use only the power cord provided by BenQ. Never use a damaged or frayed power cord.
• To avoid potential damage to the monitor, do not use it in regions with unstable power supply.
• Ensure the power cord is plugged into a grounded outlet before turning on the monitor.
• To avoid hazards, pay attention to the total electrical load when using an extension cord (with multiple outlets) with the monitor.
• Always turn off the monitor before unplugging the power cord.

For Models with External Power Adapter:

• Use only the power adapter supplied with your LCD monitor. Using other types of power adapters may cause malfunction and/or be hazardous.
• Ensure adequate ventilation for the power adapter when using it to operate the unit or charge the battery. Do not cover the power adapter with paper or other objects that may obstruct cooling. Do not use the power adapter inside a bag.
• Always connect the power adapter to a suitable power source.
• Do not attempt to repair the power adapter. The unit contains no user-serviceable parts. If the unit is damaged or exposed to excessive moisture, replace it.

Installation

• Do not use the monitor under the following conditions:
• Extremely high or low temperatures, or direct sunlight.
• Dusty locations.
• Exposure to rain, moisture, or proximity to water.
• Exposure to vibration or impact, such as in cars, buses, trains, or other vehicles.
• Near heating appliances, such as radiators, heat registers, stoves, or other heat-emitting devices (including audio amplifiers).
• In enclosed spaces (e.g., closed cabinets or bookshelves) without adequate ventilation.
• On uneven or tilted surfaces.
• Exposure to chemicals or fumes.
• Handle the monitor with care.
• Do not place heavy objects on the monitor to avoid personal injury or damage to the monitor.
• Ensure that children do not hang from or climb on the monitor.
• Keep all packaging materials away from children.

Operation

• To protect your eyesight, please read the user manual to optimally adjust the screen resolution and viewing distance.
• To reduce eye strain, take regular breaks while using the monitor.
• Avoid performing the following operations for extended periods. Otherwise, image burn-in may occur:

• Displaying images that do not fill the entire screen.
• Fixing still images on the screen.

• To avoid potential damage to the monitor, do not touch the monitor panel with your fingertip, a pen, or any pointed object.
• Frequently unplugging and replugging video connectors may damage the monitor.
• This monitor is designed for personal use. If you intend to use the monitor in a public place or in a harsh environment, contact your nearest BenQ service center for support.
• To avoid the risk of electric shock, do not disassemble or attempt to repair the monitor.
• If you notice any unusual smell, sound, or other anomaly, immediately contact your nearest BenQ service center.

Attention!

• Maintain a distance from the monitor that is 2.5 to 3 times the screen diagonal.
• Prolonged viewing of the monitor may cause eye fatigue and may adversely affect your vision over time. Rest your eyes for 5-10 minutes every hour while using the product.
• Reduce eye strain by focusing on distant objects.
• Blink frequently and perform eye exercises to prevent dry eyes.

Warnings Regarding Remote Control (if applicable)

• Keep the remote control away from sources of heat or moisture, and avoid fire.
• Do not drop the remote control.
• Do not expose the remote control to water or moisture, as this may cause malfunction.
• Ensure there are no objects between the remote control and the product's remote sensor.
• If the remote control will not be used for an extended period, remove the batteries.

Battery Safety Precautions (if applicable)

Using incorrect battery types may cause chemical leakage or explosion. Please note the following:

• Always ensure that the positive and negative terminals of the batteries are inserted correctly as shown in the battery compartment.
• Different battery types have different characteristics. Do not mix different types of batteries.
• Do not mix old and new batteries. Mixing old and new batteries can reduce battery life and may cause chemical leakage from the old batteries.
• If batteries do not work, replace them immediately.
• Chemicals leaking from batteries can cause skin irritation. If any battery chemical leaks, wipe it up immediately with a dry cloth and replace the batteries as soon as possible.
• Battery life may be shortened due to different storage conditions. Replace batteries within 3 months or as soon as possible after starting use.
• There may be local restrictions on the disposal or recycling of batteries. Consult local regulations or disposal guidelines.

If the included remote control contains coin or button cell batteries, please also note the following:

• Do not swallow batteries! Chemical burn hazard!
• The remote control included with the product contains coin or button cell batteries. If swallowed, coin or button cell batteries can cause severe internal burns in as little as 2 hours and can be fatal.
• Keep new and used batteries away from children! If the battery compartment does not close securely, do not use the product and keep it away from children.
• If you think batteries may have been swallowed or have entered any part of the body, seek immediate medical attention!

Maintenance and Cleaning

• Do not place the monitor face down directly on the floor or desk. This may scratch the panel surface.
• The equipment must be secured to the building structure before installation.
• (For models that support wall or ceiling mounting)
• Install the monitor and mounting kit on a smooth wall surface.
• Ensure that the wall material and the standard wall mount (sold separately) are strong enough to support the monitor's weight. Refer to the website for product weight information.
• Turn off the monitor and power supply, and disconnect the cables from the LCD monitor before cleaning.
• Clean the LCD (Liquid Crystal Display) with a soft, lint-free cloth to avoid scratches. Do not use liquid, emulsifying, or glass cleaning agents.
• The openings and slots on the back or top of the cover are for ventilation. Do not cover or block them. Never place your monitor on or near a heat source, or in built-in equipment unless adequate ventilation is provided.
• Do not place heavy objects on the monitor to avoid personal injury or damage to the monitor.
• Consider keeping the box and packaging; you may need them later for transporting the monitor.
• For information on performance, manufacturing date, and identification marks, refer to the product label.

Repair and Service

• Do not attempt to repair the unit yourself: Opening or removing covers may expose you to dangerous voltages and other hazards. If any of the following occurs due to improper use or other accidents, such as dropping or improper servicing of the monitor, contact qualified personnel for repair:

• For replacement of the power cord, connection cables, remote control, or power cord, contact BenQ customer service.
• For further support, contact your point of purchase or visit the local website: Support.BenQ.com.

General Warranty Information

Please note that the following conditions may void the warranty:

• Warranty documents required for warranty claims have been altered without authorization or are illegible.
• The product model or serial number has been altered, deleted, removed, or made illegible.
• Unauthorized repairs, modifications, or alterations have been performed by unauthorized service centers or individuals.
• Monitor damage caused by improper storage (including, but not limited to, exposure to natural disasters, sunlight, water, or fire).
• Purchasing issues caused by external signal sources (e.g., antenna, cable TV) unrelated to the monitor.
• Defects caused by improper use of the monitor.
• The user is solely responsible for ensuring that the monitor is compatible with local technical specifications before use, especially if the user intends to use the monitor outside the region of purchase. Failure to do so may result in product malfunction, and the user will be responsible for repair costs.
• BenQ is not responsible for problems arising from the use of non-genuine software and accessories, or non-original accessories (e.g., data loss or system malfunction).
• For your safety, please use only original accessories (e.g., power cord) to avoid potential hazards such as electric shock and fire.

Typography

Menu access steps in this document are shown in a condensed format, e.g.: Menu > System > Info.

Getting Started

Check that you have the following components upon unpacking. If any of these are missing or damaged, contact your retailer immediately.

• The available accessories and images shown here may differ from the actual contents supplied in your country. Actual contents may vary without prior notice. Cables not included with your product may be purchased separately.
• Consider keeping the box and packaging; you may need them later for transporting the monitor. The molded foam provides excellent protection for the monitor during shipping.
• Accessories and cables may be included or sold separately, depending on the unit sold in your region.
• Always keep the product and accessories out of reach of children.

Getting to Know Your Monitor

Front View

1. Power Indicator LED

[Image of Monitor Front View with LED indicator]

Rear View

1. Control Buttons
2. Power Button
3. Power Connector
4. Kensington Lock Slot
5. DisplayPort
6. HDMI Port
7. Headphone Jack
8. VESA Mount

[Image of Monitor Rear View with labeled ports and buttons]

• The above diagram may vary depending on the model.
• The product shown in the image may differ from the one sold in your region.
• (For white plastic housing models) The plastic housing of the product may turn yellowish after about 3 years due to photo-oxidation caused by light. This is a normal phenomenon and not considered a manufacturing defect.

Connections

The following diagrams illustrating connections are for reference only. Cables not included with your product may be purchased separately. For a more detailed description of connection methods, see page 15.

[Diagram showing connection of PC/Notebook to monitor via HDMI or DP, and connection of speakers/headphones]

• Connect the HDMI cable to the monitor's HDMI port. Connect the other end of the HDMI cable to the device providing the digital signal.
• Connect the DP cable to the monitor's video output. Connect the end of the cable to your computer's video output.

Monitor Hardware Installation

Follow these steps to install your monitor:

• If your computer is on, turn it off before proceeding.
• Do not plug in the power cord or turn on the monitor until instructed to do so in this guide.
• The illustrations in this document are for reference only and may differ from the actual product appearance.
• The following illustrations are for reference only. The placement and availability of input and output jacks depend on the model purchased.
• Do not apply pressure to the screen surface.
• Although the connector tongue design of the monitor stand/base may differ, it does not affect the installation, function, or appearance of the product. Ensure you assemble the monitor with the stand/base in the same package.

1. Attach the Monitor Stand and Base

Handle with care to avoid damaging the monitor. If the screen surface is pressed against an object, such as a stapler or mouse, the glass may crack or the LCD crystal may be damaged, and such damage is not covered by warranty. Be careful not to slide the monitor on the desk, as this may scratch or damage its edges or controls.

Provide ample free space on your desk for the monitor and screen, and place a soft cloth, such as the bag from the monitor packaging, on the desk. Lay the screen face down on a flat, cushioned surface.

Attach the monitor stand to the monitor base as shown, until it clicks into place.

! Be careful of sharp parts during assembly.

Align the stand arm with the monitor and push it in until it clicks and locks into place.

[Diagram showing attachment of monitor stand to base and arm to monitor]

Once done, carefully lift the monitor and turn it over, placing it upright on a flat, smooth surface.

Position the monitor and adjust the tilt angle to minimize glare.

! Handle frameless monitors with care. To adjust the screen tilt angle, place your hand on the top and base of the screen as shown in the illustration. Do not apply excessive force to the monitor.

2. Connect the Computer Video Cable

The video cables included in the package and the port configurations shown in the diagram on the right may vary depending on the model sold in your region.

[Diagram showing connection of video cables (DP/HDMI) to monitor and computer]

• Connect the HDMI cable to the monitor's HDMI port. Connect the other end of the HDMI cable to the device providing the digital signal.
• Connect the DP cable to the monitor's video output. Connect the end of the cable to your computer's video output.

3. Connect the Headphones

Headphones can be connected to the jack located at the bottom rear of the monitor.

[Diagram showing headphone connection]

4. Connect the Power Cable

Plug the other end of the power cable into the socket on the back of the monitor.

Plug the other end of the power cable into a working outlet.

! The product shown in the image may differ from the one sold in your region.

5. Power On

Turn on the monitor using the power button.

Turn on your computer as well.

! To extend the lifespan of the device, it is recommended to use your computer's power management features.

[Diagram showing power button and computer power on]

Removing the Monitor Stand and Base

1. Prepare the Monitor and Environment

First, turn off the monitor and power, then unplug the power cord. Turn off the computer before unplugging the monitor signal cable.

To protect the monitor and screen, provide ample free space on your desk for work, and cover the desk with a soft cloth, such as the bag from the monitor packaging. Lay the screen face down on a flat, cushioned surface.

Handle with care to avoid damaging the monitor. If the screen surface is pressed against an object, such as a stapler or mouse, the glass may crack or the LCD crystal may be damaged, and such damage is not covered by warranty. Be careful not to slide the monitor on the desk, as this may scratch or damage its edges or controls.

2. Remove the Monitor Stand

Press and hold the quick-release button (1), and detach the stand from the monitor (2).

[Diagram showing removal of monitor stand]

3. Remove the Monitor Base

Hold the monitor stand arm with one hand and press the release tabs with the other to detach the monitor base from the stand arm.

[Diagram showing removal of monitor base from stand arm]

Using the Monitor Mounting Kit (Sold Separately)

The back of the LCD monitor has a VESA-standard 100 mm mounting interface, allowing the monitor to be mounted on a wall arm. Please read the safety precautions carefully before installing the monitor mounting kit!

Safety Precautions

• Install the monitor and mounting kit on a smooth wall surface.
• Ensure that the wall material and the standard wall mount (sold separately) are strong enough to support the monitor's weight. You can find more information about the product's weight on the website.
• Turn off the monitor and power supply, and disconnect the cables from the LCD monitor before removing the monitor stand.

1. Remove the Monitor Stand

Lay the monitor face down on a soft, clean surface. Follow the instructions in the section "Removing the Monitor Stand and Base" on page 17 to remove the monitor stand. Then, detach the stand arm from the monitor.

If you plan to use the monitor on its stand later, store the stand arm and base in a safe place.

2. Complete the Installation Following the Wall Mount Manual

Use four M4 x 10 mm screws to attach the VESA standard wall mount to the monitor. Ensure all screws are tightened and properly secured. Consult a professional or BenQ service for wall mount installation and safety measures.

[Diagram showing VESA mount attachment]

Setting Up Your Monitor

Control Panel

The illustrations and images in this document are for reference only. Actual content may vary depending on the product provided to you.

[Image of monitor control panel]

Basic Menu Operations

Use the On-Screen Display (OSD) menu to change all monitor settings.

1. Press a control button.
2. The menu appears.
3. Use the on-screen icons to make adjustments or selections in the menu.

! Press and hold the power button for 10 seconds to reset all menu settings.

[Diagram illustrating menu navigation]

Navigating the Main Menu

The OSD menu allows you to change monitor settings. For more details, see "Basic Menu Operations" on page 19.

Available menu options may vary depending on input sources, functions, and settings. Unavailable settings will appear grayed out in the menu.

[Image of OSD menu with various settings]

Selecting the Appropriate Color Mode

The monitor offers several color modes suitable for different types of images.

1. Press a control button to open the menu.
2. Select the desired image mode in the "Color Mode" option.

Using: Low Blue Light Plus

Low Blue Light Plus technology helps reduce the blue light emitted by the display to minimize eye exposure to the harmful effects of blue light. You can reduce blue light as needed, regardless of the color mode. To adjust the Low Blue Light Plus setting:

1. Press a control button to open the menu.
2. In the "Low Blue Light Plus" option, press the < / > button to adjust the level.

Adjustable OSD Settings

When you adjust certain settings (e.g., OSD language), they take effect immediately, independent of other monitor settings or input sources. Most OSD settings can be modified and saved with color modes. When you select a color mode, the desired settings will be applied.

Resetting Settings

To reset all settings to their factory defaults, please press and hold the power button for 10 seconds. Follow the on-screen instructions to reset, starting with language selection.

Troubleshooting

Common Questions

Screen

? The image is blurry.

• Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select the appropriate resolution, refresh rate, and follow the instructions to make adjustments.
• If you are using a VGA extension cable, remove the extension for testing. Is the image in focus now? Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select your native resolution, refresh rate, and make adjustments according to the instructions for image optimization. Image blurriness due to signal loss in extension cables is considered normal. You can minimize these losses by using a cable with better signal quality or one with a built-in booster.

? Does the blurry image only occur with resolutions lower than the native resolution?

• Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select the native resolution.

? Pixel defects are noticeable.

• One or more pixels are always black, one or more pixels are always white, or one or more pixels are always red, green, blue, or any other color.
• Clean the LCD screen.
• Turn the unit off and then on again.
• Some pixels may remain permanently lit or off, which is not a malfunction but a natural characteristic of LCD technology.

? The image color is incorrect.

• Yellow, blue, or pink.
• Go to the Color and Color Reset menu, then select YES to restore colors to factory defaults.
• If the image is still not perfect and the OSD color is also incorrect, it means one of the primary colors is missing from the signal input. Check the signal cable connections. If any of the connector pins are bent or broken, contact your reseller for assistance.

? The image is distorted, flickers, or vibrates.

• Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select the appropriate resolution, refresh rate, and follow the instructions to make adjustments.

? The image is shifted.

• Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select the appropriate resolution, refresh rate, and follow the instructions to make adjustments.

? A faint shadow of a static image is visible on the screen.

• Enable the energy-saving function so that the computer and monitor enter "sleep" mode with low power consumption when not in use.
• Prevent screen burn-in with a screen saver.

Power Indicator LED

? The LED light is white or amber.

• If the LED is white, the monitor is powered on.
• If the LED is white and the screen displays "Too High", it means an unsupported display mode is being used. Change the settings to one of the supported modes. Download the Resolution file from the website (Ref: Product Support page 3). Refer to "Modifying Screen Resolution". Select the appropriate resolution, refresh rate, and follow the instructions to make adjustments.
• If the LED is amber, the energy-saving system has been activated. Press any key on the computer keyboard or move the mouse. If this does not help, check the signal cable and its connections. If any of the connector pins are bent or broken, contact your reseller for assistance.
• If the LED does not light up, check the main power connections to the external power outlet and main switch.

OSD Controls

? OSD controls are not available.

• If the OSD controls are locked by default, press and hold any button for 5 seconds to unlock them.

? How to change the OSD language?

• The OSD language can only be selected during the initial setup. To change the OSD language, you need to reset the settings. For details, see "Resetting Settings" on page 21.

OSD Messages

? The "Too High" message appears on the screen during the computer boot process.

• If the "Too High" message appears on the screen during the computer startup process, it indicates compatibility issues with the computer's operating system or graphics card. The system will automatically adjust the refresh rate. Simply wait for the operating system to start.

Further Assistance

If your problems persist after checking this manual, please contact your point of purchase or visit your local Support.BenQ.com website for further support and local customer service.