BenQ BL2790QT User manual

LCD Monitor
User Manual
Business Monitor | BL Series

2
Copyright
Copyright © 2023 by 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 permission of
BenQ Corporation.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied,
with respect to the contents hereof and specifically disclaims any warranties,
merchantability or fitness for any particular purpose. Further, BenQ Corporation reserves
the right to revise this publication and to make changes from time to time in the contents
hereof without obligation of BenQ Corporation to notify any person of such revision or
changes.
BenQ flicker-free technology maintains a stable backlight with a DC dimmer that eliminates
the primary cause of monitor flicker, making it easier on the eyes. The performance of
flicker-free may be affected by external factors such as poor cable quality, unstable power
supply, signal interference, or poor grounding, and not limited to the above mentioned
external factors. (Applicable for flicker-free models only.)
BenQ ecoFACTS
BenQ has been dedicated to the design and development of greener product as part of its
aspiration to realize the ideal of the "Bringing Enjoyment 'N Quality to Life" corporate vision
with the ultimate goal to achieve a low-carbon society. Besides meeting international
regulatory requirement and standards pertaining to environmental management, BenQ has
spared no efforts in pushing our initiatives further to incorporate life cycle design in the
aspects of material selection, manufacturing, packaging, transportation, using and disposal
of the products. BenQ ecoFACTS label lists key eco-friendly design highlights of each
product, hoping to ensure that consumers make informed green choices at purchase.
Check out BenQ's CSR Website at http://csr.BenQ.com/ for more details on BenQ's
environmental commitments and achievements.

3
Product support
This document aims to provide the most updated and accurate information to customers,
and thus all contents may be modified from time to time without prior notice. Please visit
the website for the latest version of this document and other product information. Available
files vary by model.
1. Make sure your computer is connected to the Internet.
2. Visit the local website from Support.BenQ.com. The website layout and content may
vary by region/country.
• User manual and related document
• Drivers and applications
• (EU only) Dismantled information: Available on the user manual download page. This
document is provided based on Regulation (EU) 2019/2021 to repair or recycle your product.
Always contact the local customer service for servicing within the warranty period. If you wish
to repair an out-of-warranty product, you are recommended to go to a qualified service
personnel and obtain repair parts from BenQ to ensure compatibility. Do not disassemble the
product unless you are aware of the consequences. If you cannot find the dismantled
information on your product, contact the local customer service for assistance.
Firmware upgrade
You are recommended to upgrade the product to the latest firmware version (if available)
and refer to the most up-to-date user manual to make best use of the product.
To upgrade your monitor, download and install the Display QuicKit software from the BenQ
website.
• Support.BenQ.com > model name > Software & Driver > Display QuicKit (available only when
your monitor is compatible)
• Support.BenQ.com > Display QuicKit (availability may vary by region)
The software utility checks the compatibility of your monitor automatically once launched.
Refer to the user manual of the software utility for instructions.
If your monitor is not compatible with Display QuicKit, and you wonder if there is an
updated firmware version available, please contact BenQ customer service.
EPREL Registration Number:
BL2490: 1823160
BL2790: 1823166
BL2790QT: 1384815
BL3290QT: 1392382

4
Q&A index
Start with the topics that you are interested in.
Setup
Useful tools to enhance efficiency
Functions to reduce eye strain
Menus and accessories
Maintenance and product support
How to set up the monitor and turn it on?
Safety precautions 5
How to assemble your monitor hardware (for models with height
adjustment stand) 19
How to adjust the monitor viewing angle?
Viewing angle adjustment 27
How to wall mount the monitor?
Using the monitor wall mounting kit (purchased separately) 28
How to improve vocal sounds during conference calls?
Working with the built-in Noise Cancellation Microphone (selected
models only) 42
Working with the Noise Filter Speakers (selected models only) 42
How to connect two ore more monitors to have more screen
space?
Connecting multiple monitors via MST (Multi-Stream
Transport)(selected models only) 44
How to reduce the blue light emitted from the display?
Working with Low Blue Light Plus 40
How to set the appropriate screen brightness?
Adjusting screen brightness automatically (Bright Intelligence Gen2) 41
How to use the OSD menu?
5-way controller and basic menu operations 37
Navigating the main menu 46
How to clean the monitor?
Care and cleaning 8
How to keep the monitor not in use for a long time?
How to detach the stand and the base 24
Care and cleaning 8
I need more support.
Product support 3
Servicing 8

5
Safety precautions
Power safety
• The AC plug isolates this equipment from the AC supply.
• The power supply cord serves as a power disconnect device for pluggable equipment. The
socket outlet should be installed near the equipment and be easily accessible.
• This product should be operated from the type of power indicated on the marked label. If
you are not sure of the type of power available, consult your dealer or local power
company.
• The Class I pluggable equipment Type A must be connected to protective earth.
• An approved power cord greater or equal to H03VV-F or H05VV-F, 2G or 3G, 0.75mm2
must be used.
• Use only the power cord provided by BenQ. Never use a power cord that appears to be
damaged or frayed.
• To avoid possible damage to the monitor, do not use it in a region where power supply is
unstable.
• Ensure that the power cord is connected to a grounded power outlet before turning on the
monitor.
• To avoid possible danger, observe the total electric load when using the monitor with a
(multi-outlet) extension cord.
• Always turn off the monitor before unplugging the power cord.
For Germany only:
• (If the weight of the product is less than or equal to 3 kg) An approved power cord greater
or equal to H03VV-F, 3G, 0.75mm2must be used.
• (If the weight of the product is more than 3 kg) An approved power cord greater or equal
to H05VV-F or H05RR-F, 3G, 0.75mm2must be used.
• (If a remote control is provided) RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN
INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
For models with adapter:
• Use only the power adapter supplied with your LCD Monitor. Use of another type of power
adapter will result in malfunction and/or danger.
• Allow adequate ventilation around the adapter when using it to operate the device or
charge the battery. Do not cover the power adapter with paper or other objects that will
reduce cooling. Do not use the power adapter while it is inside a carrying case.
• Connect the power adapter to a proper power source.
• Do not attempt to service the power adapter. There are no service parts inside. Replace
the unit if it is damaged or exposed to excess moisture.
Please follow these safety instructions for best performance, and long life for your monitor.
10-90% 0-3000m0-40°C 10-60% 0-12000m-20-60°C

6
Installation
• Do not use your monitor under any of the following environmental conditions:
• Extremely high or low temperature, or in direct sunlight
• Dusty places
• Highly humid, exposed to rain, or close to water
• Exposed to vibrations or impacts in places such as cars, buses, trains, and other rail vehicles
• Near heating appliances such as radiators, heaters, fuel stoves, and other heat-generating
items (including audio amplifiers)
• An enclosed place (such as a closet or bookcase) without appropriate ventilation
• An uneven or sloping surface
• Exposed to chemical substances or smoke
• Carry the monitor carefully.
• Do not place heavy loads on the monitor to avoid possible personal injury or damage to
the monitor.
• Ensure that children do not hang or climb onto the monitor.
• Keep all packing bags out of reach of children.
Operation
• To protect your eyesight, please refer to the user manual to set the optimal screen
resolution and the viewing distance.
• To reduce eye fatigue, take a break on a regular basis while using the monitor.
• Avoid taking either one of the following actions for a long time. Otherwise, burn marks
may occur.
• Play images that cannot occupy the screen entirely.
• Place a still image on the screen.
• To avoid possible damage to the monitor, do not touch the monitor panel by finger tip,
pen, or any other sharp objects.
• Excessively frequent plug and unplug of video connectors may cause damage to the
monitor.
• This monitor is designed mainly for personal use. If you want to use the monitor in a
public place or a harsh environment, contact your nearest BenQ service center for
assistance.
• To avoid possible electric shock, do not dissemble or repair the monitor.
• If a bad smell or an abnormal sound appears to come from the monitor, contact your
nearest BenQ service center for assistance immediately.

7
Caution
• The distance between you and the monitor should be 2.5 to 3 times the diagonal width of
the screen.
• Looking at the screen for an extended period of time causes eye fatigue and may
deteriorate your eyesight. Rest your eyes for 5 ~ 10 minutes for every 1 hour of product
use.
• Reduce your eye strain by focusing on objects far way.
• Frequent blinking and eye exercise help keep your eyes from drying out.
Safety notice for remote control (applicable if a
remote control is provided)
• Do not put the remote control in the direct heat, humidity, and avoid fire.
• Do not drop the remote control.
• Do not expose the remote control to water or moisture. Failure to do so could result in
malfunction.
• Confirm there is no object between the remote control and the remote sensor of the
product.
• When the remote control will not be used for an extended period, remove the batteries.
Battery safety notice (applicable if a remote control is
provided)
The use of the wrong type of batteries may cause chemical leaks or explosion. Please note
the following:
• Always ensure that the batteries are inserted with the positive and negative terminals in
the correct direction as shown in the battery compartment.
• Different types of batteries have different characteristics. Do not mix different types.
• Do not mix old and new batteries. Mixing old and new batteries will shorten battery life or
cause chemical leaks from the old batteries.
• When batteries fail to function, replace them immediately.
• Chemicals which leak from batteries may cause skin irritation. If any chemical matter
seeps out of the batteries, wipe it up immediately using a dry cloth, and replace the
batteries as soon as possible.
• Due to varying storage conditions, the battery life for the batteries included with your
product may be shortened. Replace them within 3 months or as soon as you can after
initial use.
• There may be local restrictions on the disposal or recycling of batteries. Consult your local
regulations or waste disposal provider.
If the supplied remote control contains a coin / button cell battery, pay attention to the
following notice as well.
• Do not ingest 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 can lead to death.
• Keep new and used batteries away from children. If the battery compartment does not
close securely, stop using the product and keep it away from children.
• If you think batteries might have been swallowed or placed inside any part of the body,
seek immediate medical attention.

8
Care and cleaning
• Do not place the monitor face down on the floor or a desk surface directly. Otherwise,
scratches on the panel surface may occur.
• The equipment is to be secured to the building structure before operation.
• (For models that support wall or ceiling mounting)
• Install your monitor and monitor mounting kit on a wall with flat surface.
• Ensure that the wall material and the standard wall mount bracket (purchased separately) are
stable enough to support the weight of the monitor.
• Turn off the monitor and the power before disconnecting the cables from the LCD monitor.
• Always unplug the product from the power outlet before cleaning. Clean the LCD monitor
surface with a lint-free, non-abrasive cloth. Avoid using any liquid, aerosol or glass
cleaners.
• Slots and openings on the back or top of the cabinet are for ventilation. They must not be
blocked or covered. Your monitor should never be placed near or over a radiator or heat
sources, or in a built-in installation unless proper ventilation is provided.
• Do not place heavy loads on the monitor to avoid possible personal injury or damage to
the monitor.
• Consider keeping the box and packaging in storage for use in the future when you may
need to transport the monitor.
• Refer to the product label for information on power rating, manufacture date, and
identification markings.
Servicing
• Do not attempt to service this product yourself, as opening or removing covers may
expose you to dangerous voltages or other risks. If any of the above mentioned misuse or
other accident such as dropping or mishandling occurs, contact qualified service
personnel for servicing.
• For replacement of power cord, connection cables, remote control or power adapter,
please contact BenQ customer service.
• Contact your place of purchase or visit the local website from Support.BenQ.com for more
support.
General warranty information
Note that the monitor warranty may be void if any of the following conditions occurs:
• Documents required for warranty services have been altered by unauthorized use or is
illegible.
• The model number or production number on the product has been altered, deleted,
removed or made illegible.
• Repairs, modifications, or alterations have been made by unauthorized service
organizations or persons.
• Damage caused by improper storage of the monitor (including but not limited to force
majeure, direct exposure to sunlight, water, or fire).
• Reception problems occurred due to external signals (such as antenna, Cable TV) outside
the monitor.

9
• Defects caused by abuse or misuse of the monitor.
• Before using the monitor, it is the sole responsibility of the user to check whether the
monitor is compatible with local technical standards if the user brings the monitor out of
its intended sales area. Failure to do so may cause product breakdown and the user will
have the pay the repairing costs.
• It is the sole responsibility of the user if problems (such as data loss and system failure)
occurred due to non-factory provided software, parts, and/or non-original accessories.
• Please use the original accessories (e.g. power cable) only with the device to avoid
possible dangers such as electric shock and fire.
Typographics
In this document, the steps needed to reach a menu may be shown in condensed form, for
example: Menu > System > Information.
Icon /
Symbol Item Meaning
Warning Information mainly to prevent the damage to components,
data, or personal injury caused by misuse and improper
operation or behavior.
Tip Useful information for completing a task.
Note Supplementary information.

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Table of Contents
Copyright .......................................................................................................................2
Product support ............................................................................................................3
Firmware upgrade ...................................................................................................................... 3
Q&A index ......................................................................................................................4
Safety precautions .......................................................................................................5
Power safety............................................................................................................................... 5
Installation .................................................................................................................................. 6
Operation .................................................................................................................................... 6
Safety notice for remote control (applicable if a remote control is provided) ....................... 7
Battery safety notice (applicable if a remote control is provided).......................................... 7
Care and cleaning....................................................................................................................... 8
Servicing...................................................................................................................................... 8
General warranty information.................................................................................................... 8
Getting started ........................................................................................................... 12
Getting to know your monitor ................................................................................... 14
Front view.................................................................................................................................. 14
Back view .................................................................................................................................. 15
Connections ............................................................................................................................. 16
Power delivery of USB-C™ ports on your monitor (BL2790QT/BL3290QT only) ................. 18
How to assemble your monitor hardware (for models with height adjustment stand)
19
How to detach the stand and the base .................................................................................. 24
Adjusting the monitor height .................................................................................................. 25
Rotating the monitor ............................................................................................................... 26
Viewing angle adjustment ....................................................................................................... 27
Using the monitor wall mounting kit (purchased separately) .............................................. 28
How to assemble your monitor hardware (for models without height adjustment
stand) .........................................................................................................................29
How to detach the stand and the base .................................................................................. 33
Using the monitor wall mounting kit (purchased separately) .............................................. 34
How to adjust your monitor ...................................................................................... 35
The control panel...................................................................................................................... 35
5-way controller and basic menu operations ........................................................................ 37
Switching the inputs quickly (selected models only)............................................................. 38
Working with the Quick Menu ................................................................................................. 39
Adjusting display mode............................................................................................................ 39
Choosing an appropriate picture mode (color mode) ........................................................... 40
Working with Low Blue Light Plus .......................................................................................... 40
Available menu options to each Color Mode ......................................................................... 40

11
Adjusting screen brightness automatically (Bright Intelligence Gen2) ................................ 41
Enabling color vision accessibility (Color Weakness) ........................................................... 41
Working with the built-in Noise Cancellation Microphone (selected models only) ............. 42
Working with the Noise Filter Speakers (selected models only)........................................... 42
Charging the connected device via USB-C™ port (selected models only) ............................ 43
Connecting multiple monitors via MST (Multi-Stream Transport)(selected models only) . 44
Working with a Mac series product......................................................................................... 45
Navigating the main menu ........................................................................................ 46
Input menu ............................................................................................................................... 47
Color Mode menu .................................................................................................................... 48
Eye Care menu ......................................................................................................................... 50
Color menu .............................................................................................................................. 52
Audio menu .............................................................................................................................. 54
System menu ........................................................................................................................... 56
Troubleshooting ........................................................................................................ 60
Frequently asked questions (FAQ).......................................................................................... 60
Need more help?....................................................................................................................... 63
2023/10/31
BL90-EM-V3

12
Getting started
When unpacking please check you have the following items. If any are missing or damaged,
please contact the place of purchase for a replacement.
BenQ LCD Monitor BL2790QT/BL3290QT
BL2490/BL2790
Monitor Stand
(For models with height adjustment
stand)
Monitor Base
(For models with height adjustment
stand)
Monitor Stand
(For models without height adjustment
stand)
Monitor Base
(For models without height adjustment
stand)

13
Quick Start Guide
Safety Instructions
Regulatory Statements
Power Cord
(Supplied item may differ by model or
region.)
Video Cable: HDMI
Video Cable: USB-C™
(Optional accessory)
Monitor base cover GC01
(Optional accessory, for models with
height adjustment stand)
Visit www.BenQ.com for the availability of
base cover GC01.
Quick Start Guide
Safety
Instructions
Regulatory
Statements
• Available accessories and the pictures shown here may differ from the actual contents and the product
supplied for your region. And the package contents may subject to change without prior notice. For cables
that are not supplied with your product, you can purchase them separately.
• Consider keeping the box and packaging in storage for use in the future when you may need to transport
the monitor. The fitted foam packing is ideal for protecting the monitor during transport.
• Accessories and cables may be included or sold separately depending on the product supplied for your
region.
Always keep the product and accessories out of reach of small children.

14
Getting to know your monitor
Front view
BL2790QT/BL3290QT BL2490/BL2790
1. USB-C™ port (for data transfer and power
delivery up to 7.5W)
2. USB 3.2 Gen 1 ports (downstream;
connecting to the USB devices)
3. Headphone jack
4. Speakers
5. Light sensor
6. Built-in microphone and MIC LED indicator
(See page 42 for details.)
7. MIC key
8. Noise Filter Speaker key
9. Low Blue Light Plus key
10. 5-way controller
11. Power button / Power LED indicator
12. Input key
8756
9
1011
4123
4
9
12
544
10
11

15
Back view
BL2790QT/BL3290QT BL2490/BL2790
1. AC power input jack
2. HDMI socket
3. DisplayPort socket
4. USB-C™ port (for signal transmission and
power delivery up to 65W)
5. DisplayPort output socket (for
Multi-Stream Transport, MST)
6. USB 3.2 Gen 1 ports (downstream;
connecting to the USB devices)
7. Kensington lock slot
8. VESA cover
9. Headphone jack
1
7
23456
1
8
239
7
• Above diagram may vary depending on the model.
• Picture may differ from product supplied for your region.
• (Applicable for products with white case) The case of the product may turn yellow in about 3 years due to
the photo-oxidation reactions induced by light. This is a normal phenomenon and should not be
considered as manufacturing defect.

16
Connections
The following connection illustrations are for your reference only. For cables that are not
supplied with your product, you can purchase them separately.
For detailed connection methods, see page 21 (for models with height adjustment stand)
or 31 (for models without height adjustment stand).
PC / Notebook
Speakers /
Headphone
USB peripherals
BL2790QT/BL3290QT

17
PC / Notebook
Speakers /
Headphone
BL2490/BL2790

18
Power delivery of USB-C™ ports on your monitor
(BL2790QT/BL3290QT only)
With the power delivery function, your monitor helps supply power to the connected
USB-C™ devices. Available power varies by port. Make sure the devices are connected to
the appropriate ports to be activated properly with sufficient power.
• A connected device needs to be equipped with a USB-C™ connector that supports
charging function via USB power delivery.
• The connected device can be charged via USB-C™ port even when the monitor is in power
saving mode.(*)
• The USB power delivery is up to 65W. If the connected device requires more than 65W for
operation or for boot up (when the battery is drained), use the original power adapter that
came with the device.
• The information is based on the standard testing criteria and is provided for reference.
The compatibility is not guaranteed as the user environments vary. If a separately
purchased USB-C™ cable is used, make sure the cable is certified by USB-IF and is
full-featured, with power delivery and video / audio / data transfer functions.
BL2790QT/BL3290QT
USB-C™ Power Delivery
(on the rear of the monitor)
5V / 3A
9V / 3A
12V / 3A
15V / 3A
20V / 3.25A
*: Charging via USB-C™ in monitor power saving mode is available when the USB-C power delivery function is
enabled. Go to System > USB-C Awake and select ON.

19
How to assemble your monitor hardware (for
models with height adjustment stand)
• If the computer is turned on you must turn it off before continuing.
• Do not plug-in or turn-on the power to the monitor until instructed to do so.
• The illustrations in this document are for your reference only and may look different from the appearance
of the product.
• Avoid finger pressure on the screen surface.
• The latch on the monitor stand/base of the same model may vary by design, yet the installation, function,
and product appearance are not affected in general. Be sure to assemble the monitor with the stand/base
in the same package.
Never stand your monitor on a desk or floor without its stand arm and base. The controls on the bottom of
the front bezel are not designed to hold the weight of the monitor and may be damaged.
1. Attach the monitor stand and base.
Please be careful to prevent damage to the monitor. Placing the screen surface on an object like a stapler
or a mouse will crack the glass or damage the LCD substrate voiding your warranty. Sliding or scraping
the monitor around on your desk will scratch or damage the monitor surround and controls.
Protect the monitor and screen by clearing a flat
open area on your desk and placing a soft item like
the monitor packaging bag on the desk for
padding.
Gently lay the screen face down on a flat clean
padded surface.

20
Attach the monitor stand to the monitor base as
illustrated.
Orient and align the stand arm with the monitor
( ), push them together until they click and lock
into place ( ).
Tighten the thumbscrew on the bottom of the
monitor base as illustrated.
Gently attempt to pull them back apart to check
that they have properly engaged.
Carefully lift the monitor, turn it over and place it
upright on its stand on a flat even surface.
You might want to adjust the monitor stand height.
See Adjusting the monitor height on page 25 for
more information.
Your monitor is an edge-to-edge monitor and should be
handled with care. Avoid finger pressure on the screen
surface. Adjust the screen angle by placing your hands
on the top and on the bottom of the monitor as
illustrated.
You should position the monitor and angle the screen
to minimize unwanted reflections from other light
sources.
2
1
1
2
1
2
3