BenQ LCD Monitor User Manual

Copyright

Copyright © 2025, BenQ Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior written consent of BenQ Corporation.

Disclaimer

BenQ Corporation makes no warranties, either expressed or implied, with regard to the content herein and specifically disclaims any warranties of merchantability or fitness for a particular purpose. Furthermore, BenQ Corporation reserves the right to make changes to this publication and to its content from time to time without obligation to notify any person of such revisions or changes.

BenQ Flicker-Free technology maintains a stable backlight using a DC dimming driver, which eliminates the main cause of monitor flicker, thus saving your eyes. Flicker-Free performance may be affected by external factors such as low cable quality, unstable power supply, signal interference, or poor grounding. (Applies only to models with Flicker-Free technology.)

Product Support

The goal of this document is to provide customers with the most up-to-date and accurate information. Therefore, all content may be updated from time to time without prior notice. The latest version of this document and additional product information can be found on the website. Available files vary by model.

1. Ensure your computer is connected to the internet.
2. Visit your local website at Support.BenQ.com. The website layout and content 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 available pursuant to Regulation (EU) 2019/2021 for the repair or recycling of your product. For service during the warranty period, always contact local customer service. If you wish to repair the product out of warranty, we recommend that you contact a qualified service technician and obtain genuine BenQ spare parts to ensure compatibility. Do not disassemble the product if you are unaware of the consequences. If you cannot find disassembly information for your product, please contact local customer service for assistance.

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

Index of Questions and Answers

Start with topics that interest you.

Settings

• How to set up and turn on the monitor?
• Safety Guidelines
• How to install this monitor
• How to mount the monitor on the wall?
• Using the monitor mounting kit (sold separately)

Eye Strain Reduction Features

• How to reduce blue light emission from the display?
• Working with Low Blue Light Plus

Menus and Accessories

• How to use the OSD menu?
• Basic menu options
• Using the main menu

Product Care and Maintenance

• How to clean the monitor?
• Device care and maintenance
• Detaching the stand and base
• How to store an unused monitor for a long time?
• Device care and maintenance

Need More Support

• Product Support
• Device Service

Safety Guidelines

Safety with regard to power supply

For the best performance and long operating life of your monitor, please follow these safety warnings.

• The power plug disconnects this device from the mains power.
• The power cord also serves as a means of disconnecting the device from the mains power. The socket outlet should be near the device and easily accessible.
• This apparatus must be powered by the voltage indicated on the apparatus rating label. If you are unsure of the voltage of your electrical network, please consult your dealer or local electricity company.
• Type A equipment with a Class I plug must be connected to a protective earth.
• A power supply cord of at least H03VV-F or H05VV-F, 2G or 3G, 0.75 mm² must be used.
• Use only the BenQ supplied power cord. Never use a power cord that is damaged or frayed.
• To prevent possible damage to the monitor, do not use it in areas with an unstable power supply.
• Before turning on the monitor, ensure that the power cord is plugged into a grounded outlet.
• To avoid potential hazards, when using an extension cord with multiple sockets, respect the total electrical load.
• Always turn off the monitor before unplugging the power cord.

For models with adapter:

• Use only the power adapter supplied with your LCD monitor. Using a different type of power adapter will lead to failure or risk.
• When using the adapter to power the device or charge the battery, allow adequate ventilation around the adapter. Do not cover the power adapter with paper or other objects to avoid hindering cooling. Do not use the power adapter when it is in your bag.
• Plug the power adapter into the correct power source.
• Do not attempt to repair the power adapter. There are no repairable parts inside. If the adapter is damaged or has been 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 environment
  • High humidity, areas exposed to rain or near water
  • Areas exposed to vibrations or shocks, such as in cars, buses, trains, and other rail vehicles
  • Near heating appliances such as radiators, heaters, stoves, and other heat-generating objects (e.g., sound amplifiers)
  • Enclosed space (e.g., a cabinet or bookcase) without adequate ventilation
  • Uneven or sloping surface
  • Areas exposed to chemicals or smoke
• Carry the monitor with care.
• Do not place heavy objects on the monitor to avoid possible injury or damage to the monitor.
• Do not allow children to hang on the monitor or climb on it.
• Keep all packaging material out of reach of children.

Operation

• For eye protection, please refer to the user manual for optimal screen resolution and viewing distance settings.
• To reduce eye strain, take regular breaks when using the monitor.
• Avoid performing any of the following activities for extended periods. Otherwise, burn-in marks may occur.
  • Playing images that do not fill the entire screen.
  • Displaying a static image on the screen.
• To prevent possible damage to the monitor, do not touch the monitor panel with your fingertips, pens, or any other sharp objects.
• Excessively frequent plugging and unplugging of video connectors may cause damage to the monitor.
• This monitor is primarily intended for personal use. If you intend to use the monitor in a public place or in a harsh environment, please contact your nearest BenQ service center.
• To avoid electric shock, do not disassemble or repair the monitor yourself.
• If you notice any unusual smell or noise coming from the monitor, contact the nearest BenQ service center immediately.

Important Notes

• The distance between you and the monitor should be 2.5 to 3 times the screen diagonal.
• Prolonged screen viewing causes eye fatigue and may worsen your eyesight. Rest your eyes for 5-10 minutes every hour you use the product.
• Relieve eye strain by focusing on distant objects.
• Frequent blinking and eye exercises help prevent dry eyes.

Safety Notes for Remote Control (if available)

• Do not expose the remote control to direct heat, humidity, and keep it away from fire.
• Do not drop the remote control on the floor.
• Do not expose the remote control to water or moisture. This could lead to damage.
• Ensure there is no object between the remote control and the product's remote sensor.
• When the remote control is not used for an extended period, remove the batteries.

Safety Note for Batteries (if remote control is available)

Using the wrong type of batteries may lead to chemical leakage or explosion. Remember:

• Always ensure that batteries are inserted correctly with the positive and negative terminals facing the direction shown in the battery compartment.
• Different types of batteries have different characteristics. Do not use different types of batteries together.
• Do not mix old and new batteries. Mixing old and new batteries will shorten battery life or cause chemical leakage from the old batteries.
• Replace batteries immediately when they stop working.
• Chemicals leaking from batteries can cause skin irritation. If any chemical substance leaks from the batteries, wipe it off immediately with a dry cloth and replace the batteries as soon as possible.
• Due to different storage conditions, batteries supplied with your product may have a shorter lifespan. Replace them within 3 months or as soon as possible after first use.
• Local regulations may apply to battery disposal or recycling. Contact your local waste disposal expert or supplier.

If the supplied remote control contains a coin/button cell battery, pay attention to the following note:

• Do not swallow the battery. Chemical burn hazard.
• The remote control supplied with this product contains a coin/button cell battery. If the coin/button cell battery is swallowed, it can cause severe internal burns in just 2 hours and lead to death.
• Keep new and used batteries out of reach of children. If the battery compartment cannot be securely closed, stop using the product and keep it away from children.
• If you think batteries may have been swallowed or entered any part of the body, seek immediate medical attention.

Device Care and Maintenance

• Do not place the monitor face down directly on the floor or a tabletop. Otherwise, the panel surface may get scratched.
• Before using the device, it must be attached to the building structure.
• (For models that support wall or ceiling mounting)
  • Mount the monitor and mounting kit on a flat surface.
  • Check that the wall material and the standard wall mount (sold separately) are sufficiently strong to support the monitor's weight. Refer to the product specifications on the website for weight details.
• Before disconnecting cables from the LCD monitor, turn off the monitor and power.
• Always unplug the product from the power source before cleaning. Clean the LCD monitor cabinet surface with a soft, lint-free cloth. Avoid using any liquids, aerosol cleaners, or glass cleaners.
• The cutouts and openings on the back and top of the cabinet are for ventilation. These cutouts and openings must not be blocked or covered. This monitor must never be placed near or over a radiator or heat source, nor should it be built into cabinets, shelves, and the like, unless proper ventilation is ensured.
• Do not place heavy objects on the monitor to avoid possible injury or damage to the monitor.
• Consider storing the box and packaging material for future use in case of monitor transport.
• The product label contains information about rated power, manufacturing date, and identification marks.

Device Service

• Do not attempt to service this device yourself, as opening or removing covers may expose you to high-voltage points inside the device or cause other hazards. If any of the above circumstances or other accidents occur, such as dropping the device or malfunction, contact a qualified service technician for service.
• If you need to replace the power cord, connection cables, remote control, or power adapter, contact BenQ customer service.
• Contact your place of purchase or visit the local website at Support.BenQ.com for further support.

Support.BenQ.com

General Warranty Information

Please note that if the following situations occur, the warranty on the monitor may become void:

• Documents required for warranty service have been altered or are illegible without authorization.
• The model number or serial number has been altered, erased, removed, or is illegible.
• Unauthorized organizations or persons have performed repairs, modifications, or alterations.
• Damage due to improper storage of the monitor (e.g., due to force majeure, direct sunlight, water, or fire).
• Signal reception problems occurred due to external signals (such as antenna, cable TV) outside the monitor.
• Defects caused by misuse or improper use of the monitor.
• If you move the monitor outside the original area of sale before you start using it, it is your sole responsibility as the user to check whether the monitor complies with local technical standards. Failure to do so may cause damage to the device and you will be responsible for repair costs.
• If problems occur (e.g., data loss and system failure) due to software not supplied by the manufacturer, parts, or non-genuine accessories, the user is solely responsible.
• Use only genuine accessories (e.g., power cord) with the device to avoid potential hazards such as electric shock and fire.

Typography

Steps required to access a particular menu may be displayed in a simplified form in this document, for example: Menu > System > Information.

Getting Started

When unpacking, please check if you have all the following items. If any of them are missing or damaged, contact the dealer where you purchased the monitor immediately.

• LCD monitor
• Monitor stand
• Monitor base
• User documents
  • Quick start guide
  • Safety instructions
  • Regulatory information
• Power cord (Supplied item may vary depending on model or region.)
• Video cable: HDMI

Note:

• The accessories and images shown here may differ from the actual content and product supplied to your area. The packaging content may also change without prior notice. Cables not supplied with your product can be purchased separately.
• Consider storing the box and packaging material for future use in case of monitor transport. The custom-shaped foam packaging material is ideal for protecting the monitor during transport.
• Accessories and cables may be included in the delivery or sold separately depending on the product supplied for your area.
• Always keep the product and accessories out of reach of small children.

Getting to Know Your Monitor

Front View

1. Power LED Indicator

Rear View

1. Control buttons
2. Power button
3. AC power input connector
4. Kensington lock slot
5. DisplayPort socket
6. HDMI socket
7. Headphone connector
8. VESA mounting element

Note:

• The diagram above may vary by model.
• The image may differ from the appearance of the device supplied to your region.
• (For products with white packaging) It is possible that after about three years, the product packaging will turn yellow due to photo-oxidative reactions caused by light. This is a normal phenomenon and should not be considered a manufacturing defect.

Connection

The following connection illustrations are for information only. Cables not supplied with your product can be purchased separately.

For details on connection methods, see page 15.

Connection Diagram:

• Connect the HDMI cable plug to the HDMI port on the monitor. Connect the other end of the cable to the HDMI port of the device's digital output.
• Connect the DP cable plug to the video socket on the monitor. Connect the other end of the cable to the computer's video socket.

How to Install This Monitor

• If the computer is on, you must turn it off before proceeding.
• Do not connect the monitor or turn on its power until prompted to do so.
• The images in this document are for illustrative purposes only and may look different from the actual product.
• The following illustrations are for information only. The placement and available input and output connectors may vary depending on the model purchased.
• Do not press the screen surface with your finger.
• The latch on the stand/base of the same model monitor may differ in construction, but the installation, function, and appearance of the product are generally not affected. Make sure you have installed the monitor on the stand/base that is in the same package.

1. Attach the monitor stand and base.

Proceed with care to avoid damaging the monitor. Placing the screen surface on a stapler or mouse, for example, may cause the glass to crack or the LCD substrate to be damaged, voiding the warranty. Moving the monitor on a desk may scratch or damage the monitor's frame and controls.

Protect the monitor and screen by creating a clear, flat surface on the desk and placing a soft material, such as the monitor packaging, on this surface. Place the monitor face down on this padding on a clear, flat surface.

According to the illustration, attach the monitor stand to the base until it clicks into place.

Caution: Be careful of sharp parts during assembly.

Align the monitor stand arm with the monitor and push them together until they click.

Detaching the Stand and Base

1. Prepare the monitor and workspace.

Before disconnecting the power cable, turn off the monitor and power. Before disconnecting the signal cable, turn off the computer.

Protect the monitor and screen by creating a clear, flat surface on the desk and placing a soft material, such as a towel, on this surface. Then, place the monitor face down on this padding on a clear, flat surface.

Proceed with care to avoid damaging the monitor. Placing the screen surface on a stapler or mouse, for example, may cause the glass to crack or the LCD substrate to be damaged, voiding the warranty. Moving the monitor on a desk may scratch or damage the monitor's frame and controls.

2. Remove the Monitor Stand.

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

3. Remove the Monitor Base.

With one hand, hold the monitor stand arm and press the release tabs to detach the monitor base from the stand arm.

Using the Monitor Mounting Kit (sold separately)

The back of the LCD monitor has a standard VESA mounting pattern with a 100 mm pitch, which allows for wall mounting. Before installing the monitor mounting kit, please read the safety instructions carefully.

Safety Instructions

• Mount the monitor and mounting kit on a flat surface.
• Check that the wall material and the standard wall mount (sold separately) are sufficiently strong to support the monitor's weight. Refer to the product specifications on the website for weight details.
• Before disconnecting cables from the LCD monitor, turn off the monitor and power.

1. Remove the Monitor Stand.

Place the monitor face down on a clean, soft surface. Remove the monitor stand according to the instructions in the Detaching the Stand and Base section on page 17. Then pull the stand away from the monitor.

To use the monitor on the stand in the future, store the base and stand in a safe place.

2. Complete the installation according to the instructions for the purchased wall mount.

Use four M4 x 10 mm screws to attach the standard VESA wall mount to the monitor. Ensure that all screws are tightened and securely fastened. For screen mounting on a wall or safety procedures, consult a qualified professional or BenQ service.

Monitor Settings

Illustrations and images shown in this document are for informational purposes only. Actual content may vary depending on the product supplied.

Control Panel

Basic Menu Options

You can adjust all monitor settings using the OSD menu.

1. Press any control button.
2. The menu will appear.
3. Using the on-screen icons in the menu, you can make adjustments or selections.
Press and hold the power button for 10 seconds to restore all menu settings.

Using the Main Menu

You can adjust monitor settings using the OSD menu. For more information, see the Basic Menu Options section on page 19.

Available menu options may vary depending on input sources, functions, and settings. Menu options that are not available will be displayed in gray.

Selecting the Appropriate Color Mode

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

1. Press any control button to display the menu.
2. Select the desired picture mode in the Color Mode section.

Working with Low Blue Light Plus

Low Blue Light Plus technology helps reduce the blue light emitted by the display to reduce the risk of eye exposure to blue light.

You can reduce blue light as needed, regardless of the color mode. To adjust Low Blue Light Plus settings:

1. Press any control button to display the menu.
2. In the Low Blue Light Plus section, press < / > to adjust the level.

Adjustable OSD Settings

While some settings (e.g., OSD language) change and take effect immediately regardless of other monitor settings or input, most OSD settings can be adjusted and saved with consideration for color modes. The desired settings will be applied after selecting a color mode.

Resetting Settings

To restore all settings to their factory defaults, press and hold the power button on the monitor for 10 seconds.

Follow the on-screen prompts to perform the reset and begin with language settings.

Troubleshooting

Frequently Asked Questions (FAQ)

Display

? The image is blurry.

• Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Then, select the correct resolution, refresh rate, and make settings according to these instructions.
• If you are using a VGA extension cable, remove the extension cable for testing. Is the image sharp now? Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Then, select the correct resolution, refresh rate, and make settings according to these instructions to optimize the image. Some blurring of the image due to loss in the extension cable is normal. You can minimize these losses by using a cable with lower resistance or by using a built-in amplifier.

? Does the blurry image only occur at resolutions lower than the native (maximum) resolution?

• Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Select the native resolution.

? Pixel defects are visible.

• One or more pixels are always black, one or more pixels are always white, one or more pixels are always red, green, blue, or other colors.
• Clean the monitor screen.
• Turn the power off and on again.
• These are pixels that are always on or off; this is a natural defect that occurs in LCD technology.

? The image has incorrect colors.

• It has a yellow, blue, or pink tint.
• Go to Color and Reset Color, then select YES to restore color settings to factory defaults.

If the image is still not correct, and the on-screen display (OSD) menu also does not have correct colors, it means that one of the three primary colors is missing in the input signal. Now check the connectors on the data (signal) cable. If any pin is bent or broken, please contact your dealer for the necessary support.

? The image is distorted, flickering, or blinking.

• Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Then, select the correct resolution, refresh rate, and make settings according to these instructions.

? The image is shifted in one direction.

• Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Then, select the correct resolution, refresh rate, and make settings according to these instructions.

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

• Activate the power saving function so that the computer and monitor enter "sleep mode" with low power consumption when not actively used.
• Use a screen saver to prevent image retention.

Power LED Indicator

? The LED indicator is solid white or orange.

• If the LED indicator is solid white, the monitor is on.
• If the LED indicator is solid white and the screen displays a "No Signal" message, it means you are using a display mode that this monitor does not support, so switch to one of the supported modes. Download the Resolution file from the website (see Product Support on page 3). Refer to the "Adjusting Screen Resolution" section. Then, select the correct resolution, refresh rate, and make settings according to these instructions.
• If the LED indicator is orange, the power saving mode is active. Press any key on the computer keyboard or move the mouse. If this does not help, check the data (signal) cable connectors. If any pin is bent or broken, please contact your dealer for the necessary support.
• If the LED indicator is off, check the power outlet, external power adapter, and the monitor's power switch.

OSD Controls

? OSD controls are inaccessible.

• To unlock the OSD settings, if the OSD menu is locked, press and hold any button for 5 seconds.

? How to change the OSD language?

• The OSD language can only be selected during initial setup. To change the OSD language, you must reset the settings. For more information, see the Resetting Settings section on page 21.

OSD Messages

? "No Signal" message on the screen during computer startup.

• If the "No Signal" message appears on the screen during computer startup, it indicates a compatibility problem with the computer due to the operating system or graphics card. The system will automatically adjust the refresh rate. Wait for the operating system to start.

Need More Help?

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