background image

Android system interface

58

Audio/Video

Select an audio/video file you want to play on the display and perform any of the 

functions shown on the screen.

PNG

Non-interlace

1920x1080

9600x6400

Interlace

1920x1080

9600x6400

BMP

-

9600x6400

9600x6400

The limitation of max resolution depends on DRAM size.

Icon

Function

Exits the audio/video player.

Plays the previous audio/video file.

Rewinds the audio/video.

Plays/pauses the current audio/video file.

Fast forwards the audio/video.

Plays the next audio/video file.

Displays file information, including name, creation time, file size, and file 
format.
Adjusts the audio/video volume.

Image

Photo

Resolution

Maximum Resolution

Содержание RM6503

Страница 1: ...RM6503 RM7503 RM8603 Interactive Flat Panel User Manual ...

Страница 2: ...contents thereof without obligation to notify any person of such revision or changes Copyright Copyright 2021 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 witho...

Страница 3: ...com Business SUPPORT Downloads model name User Manual 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 servic...

Страница 4: ...ing an external PC 12 Parts of the display and their functions 14 Front panel 14 Input output terminals 16 Remote control 18 Using the remote control 19 Connection 22 Connecting the VGA input 22 Connecting the touch module 23 Connecting the digital inputs 24 Connecting the video output 25 Connecting to serial port 26 Connecting power 27 Basic operations 28 Turning the display on or off 28 Initial ...

Страница 5: ...ings 48 Android system interface 52 Main interface 52 Side tool bar 53 EZ Floating Tool 54 AMS file manager overview 55 InstaShare 2 63 Product information 64 Specifications 64 Dimensions RM6503 68 Dimensions RM7503 69 Dimensions RM8603 70 Supported input signal resolution 71 Troubleshooting 72 Accessibility Requirements for Rehabilitation Act of 1973 Section 508 75 4 21 22 ...

Страница 6: ...unt this display Using wrong or unsuitable accessories may cause the display to fall and result in serious personal injuries Make sure that the surface and fixing points are strong enough to sustain the weight of the display To reduce the risk of electric shock do not remove covers No user serviceable parts inside Refer servicing to qualified service personnel To prevent personal injuries mounting...

Страница 7: ...specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord ...

Страница 8: ...ay This condensation will usually disappear after around 2 hours of normal operation RP series does not offer image retention function for more information please refer to installation guide If a still image is required for a display it is recommended to enable Pixel shift See Advanced settings on page 46 for more information RP series does not support portrait use portrait use may cause display d...

Страница 9: ...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 disp...

Страница 10: ...Quick start guide USB Type C cable x 1 Wall mount x 1 Steel pad x 1 The type of power cord supplied may differ from that illustrated depending on your region of purchase Before discarding the package check that you haven t left any accessories inside the box Dispose of packaging materials wisely You can recycle the cardboard carton Consider storing the package if possible for future transport of t...

Страница 11: ...display to fall or malfunction Installing the display on a wall 1 Place a clean dry and lint free cloth on a flat horizontal and object free surface Make sure that the size of the cloth is larger than the display 2 Gently lay the display on the cloth with the LCD screen facing down 3 Stability Hazard The flat panel may fall causing serious personal injury or death To prevent injury this flat panel...

Страница 12: ...bracket s instructions The length of the screw should exceed the thickness of the wall mounting bracket by at least 25 mm Make sure that all screws are tightened and secured properly Recommended torque 470 635N cm The mounting means should be strong enough to bear the weight of the display To maintain proper ventilation keep at least 10 mm of clear space from the back cover of the display to the w...

Страница 13: ...el pad that supports VESA mounting dimension 100x100mm You can install the steel pad to the external PC with four screws and then secure the PC with steel pad assembly onto the top right side of the display with two M3x6 screws maximum torque 4 5 kgf cm ...

Страница 14: ...es connecting the external computer s video and audio signals via their respective ports the external computer s USB port needs to be connected to the corresponding touch port Once the driver is installed the external computer can be controlled via touch gestures on the display the touch function is enabled for the HDMI channels by default USB 3 0 Connect USB devices such as keyboards mice and USB...

Страница 15: ...ay and their functions 15 Return Press to return to the previous menu Menu Press to enter the function menu Volume Down Press to decrease the volume Volume Up Press to increase the volume No Name Description 11 12 13 14 ...

Страница 16: ...0 1000 Mbps for OPS LAN1 SPDIF Connect the SPDIF cable from external audio devices to the display for audio out MIC Connect to a microphone AUDIO OUT Connect to external speakers or earphones USB 2 0 Connect USB devices such as keyboards mice and USB flash drives USB 2 0 RS232 Serial interface used for mutual transfer of data between devices 1 2 3 4 5 7 8 9 10 6 11 12 13 14 15 16 17 18 20 1 2 3 4 ...

Страница 17: ...r other video devices Capable of supporting touch function DP Connect to a PC or audio video equipment that supports the DisplayPort interface Capable of supporting touch function TOUCH USB Supports touch signal input from an external computer When connecting the external computer besides connecting the external computer s video and audio signals via their respective ports the external computer s ...

Страница 18: ...nward selection Android system main screen button Return key Voice command key Press to activate Saffi BenQ Voice Assistant hold the button for two seconds then say the supported command Release the button until you finish the command Speak directly to the microphone built into the top portion of the remote control Position the microphone closer to your mouth or speak in a loud and clear voice Vol...

Страница 19: ...control Installing remote control batteries Though the remote control dongle can be installed into any of the display s USB ports it is recommended that you install the dongle into one of the USB ports at the bottom of the rear side of the display Dongle 1 Open the remote control battery compart ment cover 2 Insert the supplied batteries ensuring that the positive and negative marked battery termi...

Страница 20: ...periencing issues using the function key on the remote control please follow the steps and pair again the remote control to resolve the issue 1 Insert the enclosed dongle to Interactive Flat Panel s USB port and place the remote control near it 2 Press the and at the same time and the indicator light will start flashing 3 The pairing is completed once the indicator stops flashing 3 Re install the ...

Страница 21: ...getting the remote control wet or store it in humid environments like bathrooms If the display s remote control sensor window is exposed to direct sunlight or strong light the remote control may not operate properly In this situation change the light source readjust the angle of the display or operate the remote control from a location closer to display s remote control sensor window TYPE C HDMI T...

Страница 22: ...t 1 Connect the VGA port on the display to the VGA output port on a computer using a D Sub 15 pin cable 2 Connect the computer s audio output jack to the AUDIO IN jack on the display with a suitable audio cable Audio cable Computer D Sub 15 pin cable ...

Страница 23: ...peration There is no need to install additional drivers on the computer Avoid blocking the touch screen frame where sensors are located when initiating the touch module It is highly recommended that you connect the display to the PC or laptop directly Avoid connecting the display to a face plate device which may cause failures in touch operations If any ghost image occurs please try to un plug and...

Страница 24: ...n the display using an HDMI or DisplayPort cable 2 To view video from this input press on the remote control to switch to the respective input source The applicable cable is not supplied and should be purchased separately The display provides a selection for the dual monitor mode TYPE C HDMI TOUCH USB PUBLIC USB3 0 UCH USB HDMI cable DVD player Computer HDMI cable DisplayPort cable ...

Страница 25: ...he video output 1 Use an HDMI cable to connect the HDMI OUT port to the respective input port on the device 2 Plug in the power cord and switch the power on 3 Press on the remote control to turn on the display HDMI IN HDMI cable ...

Страница 26: ...plied and should be purchased separately This connection is applicable to straight through RS 232C cable only After using serial port line to connect central control equipment and machine certain function of the machine can be controlled via central control equipment such as machine on off and adjustment of sound volume etc RS 232C cable Computer ...

Страница 27: ...nes used in your region Only use an appropriate power cord for your region Never use a power cord which appears damaged or frayed or change the plug type on the power cord Be aware of the power loading when you use extension cords or multiple outlet power boards There are no user serviceable parts in this display Never unscrew or remove any covers There are dangerous voltages inside the display Tu...

Страница 28: ...utton on the control panel or on the remote control To turn off the display press the Power button on the control panel or on the remote control The system will automatically enter standby mode AC IN AC IN RM6503 RM7503 RM8603 Power Switch Power Switch TYPE C HDMI TOUCH USB PUBLIC USB3 0 IR Receiver Power Button The display s standby mode still consumes power To completely cut off power supply set...

Страница 29: ...Tap Next on the screen to begin Follow the on screen instructions to set up the language date and time and network Or your can skip some of these steps and complete the setup later OSD Setting Use one of the following methods to enter the OSD menu Press on the remote control Press the Menu button on the front panel Drag the OSD menu up from the bottom center of the screen Refer to Menu operations ...

Страница 30: ...o enable AMS service set Available offline accounts and check Device information Multiple users Before logging in as User be sure to enter the correct email address and activate AMS service To access your personal account you have to ask the administrator to activate AMS service first and create your account through IAM service Refer to User Management on page 31 for more information For more info...

Страница 31: ...o create your account through BENQ IAM web service Creating a new account 1 As an administrator to create a new account for regular users go to BenQ Service website https iam benq com Suggested browsers are Chrome and Firefox 2 Log in and choose IAM 3 Click Create New Account to continue ...

Страница 32: ... verifying email is sent to the new account owner If some members in your organization need more privilege to control the AMS service you can activate the users as other roles You can also activate X Sign DMS and or Broadcast when creating user accounts You can easily switch to different services X Sign DMS and Broadcast by clicking the icon on the upper right corner ...

Страница 33: ...f there is no IP address shown please connect the display to the ethernet cable Wireless connection You must use a wireless adapter in order to connect the display to the Internet wirelessly Please contact your local dealer for more information on configuring the wireless connection 1 Press on the remote control or go to Network Wi Fi To find the MAC address in Android OS please go to Setting Syst...

Страница 34: ...password is needed if it is your first time to use the network Key in the password and press Connect The device is now connected to the WLAN If you are connecting to a secured wireless network enter the password for the wireless network access when prompted and tap Connect For wireless connection BenQ shipment does not include wireless dongles therefore you may purchase it separately via the local...

Страница 35: ...About System updates 2 If there is an update available the system will begin updating Adjusting audio volume level To adjust the audio volume level do either one of the following Press on the remote control to adjust the volume Press on the front panel of the display Go to Setting General to adjust the volume Refer to General settings on page 40 for more information Software update process may tak...

Страница 36: ...functions The following table shows a list of gestures you can use on the touch screen Make sure that you have installed the touch USB cable on the display to a computer OS functions Gesture actions Click Tap the screen once Double click Tap the screen twice Right click 1 Press on the target 2 Hold and wait for a blue ring to appear 3 Release your finger Drag Drag one finger left or right ...

Страница 37: ...ons 37 Pan up Pan down Back Forward Quickly drag your finger Flick in a desired direction Scrolling Drag one or two fingers up or down Zoom Move two fingers apart or toward each other OS functions Gesture actions or ...

Страница 38: ...ll amount of alcohol to clean the infrared plastic filter To avoid damage to the screen never use any type of abrasive materials to wipe the screen Use a neutral detergent to clean the touch screen Avoid using detergents with erosive substance such as banana oil or ammonia Moisten a clean soft lint free cloth with a neutral detergent and then clean the touch screen Do not spray a detergent on the ...

Страница 39: ...menu Input settings Press on the remote control Menu on the front panel or drag from the bottom middle to the center of the screen to enter the OSD menu Press on the remote control and press OK to confirm or directly click a desired input source Press on the remote control or click a blank area outside the menu to exit the menu TYPE C HDMI TOUCH USB PUBLIC USB3 0 ...

Страница 40: ...splay Directly swipe to enable or disable Mute Go to More to enter the Audio menu Picture Under Picture use the brightness bar to adjust the brightness for the display You can enable the Eye Care function on the OSD menu Eye Care switches the display s low blue light mode Directly swipe to enable or disable Auto Backlight Go to More to enter the Picture menu ...

Страница 41: ... Care function under General Low blue light flicker free To accord with Low blue light TUV certificated the default setting is Picture Mode Standard Brightness 50 Contrast 50 and Color Temperature Standard and then enable Eye Care function To accord with Flicker Free TUV certificated the default setting is Picture Mode Standard Brightness 50 Contrast 50 and Color Temperature Standard Suggestions f...

Страница 42: ...n item Press on the remote control or click a blank area outside the menu to exit the menu Menu Description Balance Drag the knob to adjust the balance Sound Mode Touch a preset sound environment Options are Standard News Music Movie Sport or User mode Under User mode you can adjust 10KHz 5KHz 1 5KHz 500Hz ...

Страница 43: ...Options are Eco Standard Bright and Soft Under Eco mode Brightness level Contrast and Color Temperature are locked Brightness level Under Standard Bright and Soft mode press on the remote control or drag the knob to adjust the brightness Contrast Under Standard Bright and Soft mode press on the remote control or drag the knob to adjust the contrast Color Temperature Press on the remote control or ...

Страница 44: ...s for each input source Apps Accesses all the applications installed in the dispaly Storage Allows you to manage the display s storage Advanced Settings Accesses more device settings Refer to Advanced settings on page 46 for more information Email Accounts Sets the display s email accounts Current Mic Displays current microphone information Screen Allows you to adjust the display s image settings ...

Страница 45: ...Menu operations 45 Display settings Press on the remote control and press OK to confirm or directly click an item Press on the remote control or click a blank area outside the menu to exit the menu ...

Страница 46: ...ick the switch to lock or unlock the remote control IR sensor on the front panel of the display Touch lock Press OK on the remote control or click the switch to lock or unlock the screen Pixel shift Press OK on the remote control or click the icon to set a pixel shift preventing from image retention DCR Press OK on the remote control to enable or disable DCR If keypad IR and touch are locked all a...

Страница 47: ...ntrol and press OK to adjust image Use the H position V position Clock rate and Phase functions to manually adjust the image Menu Description Aspect ratio Press on the remote control or click an aspect ratio Options are 16 9 or PTP You can also select Auto to automatically adjust the image Menu Description H position Press to move the screen to the left or right V position Press to move the screen...

Страница 48: ...eyboard Input methods in Android Startup Shutdown Click to set the Startup channel OPS startup option Wake on Lan and Power off reminder Refer to Startup Shutdown on page 50 for more information Floating tool Click to open and close the floating tool Refer to EZ Floating Tool on page 54 for more information About Click to view system information in Android The amount of available storage space for...

Страница 49: ...Menu operations 49 Proxy setting Go to Network Ethernet Press Proxy to go to the proxy setting Enter the proxy host name Enter the using channel ...

Страница 50: ...Menu operations 50 Startup Shutdown Go to System Startup Shutdown For Startup channel you can choose Last channel or other sources ...

Страница 51: ...uilt in OPS startup option you can choose Startup only through OPS built in startup option or startup through any channel For Power off reminder you can set on or off time Schedules can be made by choosing the days of the week ...

Страница 52: ...trol or drag the OSD menu up from the bottom center of the screen to enter the OSD menu to select an input Note that this is a closed Android OS Download and use of unauthorized apps on this system are not available Icon Function Description Source Press to enter the Connection menu to set input source OSD Settings Press to open or close the OSD settings menu All Apps Press to access all apps and ...

Страница 53: ...he screen to suit your preference Icon Function Description Back Tap to return to the previous screen Home Tap to return to the main interface Task Switcher Tap to switch between recent apps and input sources EZ Floating Tool Tap to open the floating annotation tool Duo Window Tap to run two apps side by side Available by 2022 Q2 EZWrite Tap to enter EZWrite annotation software ...

Страница 54: ...l bar when EZWrite 6 is in use Highlighter Click to enable the Highlighter tool The highlighter provides 5 color selections red yellow green blue and black and supports thickness adjustment Laser Pointer Click to enable the laser point on the screen Eraser Click to erase annotations on the screen You may use a finger eraser or choose to clear all annotations Tool Box Click to open the tool box whi...

Страница 55: ...zed workspace environment and settings and manage your files and accounts on any IFP that you have logged into To access the AMS files use either of the following methods Tap the file manager shortcut Tap the AMS shortcut While logging in you will see four main parts as described in the table below 1 2 4 3 ...

Страница 56: ...lder or connected USBs The icon next to Google Drive Dropbox shows that the account is bound to AMS service 2 Folder Path You can browse the file folder in this area 3 Listing Files You can see a list of files from the storage device you select 4 Operating Tab You can edit the files using the operating tabs here Regular users can only view their own files while the local admin can view all users f...

Страница 57: ... on the screen Supported image format maximum resolution Icon Function Exits the image viewer Plays the previous image file Plays the next image file Magnifies the current image Shrinks the current image Rotates the current image clockwise Prints out the image Displays file information including name creation time file size and file format Image Photo Resolution Maximum Resolution JPEG Base line 1...

Страница 58: ...x6400 9600x6400 The limitation of max resolution depends on DRAM size Icon Function Exits the audio video player Plays the previous audio video file Rewinds the audio video Plays pauses the current audio video file Fast forwards the audio video Plays the next audio video file Displays file information including name creation time file size and file format Adjusts the audio video volume Image Photo...

Страница 59: ... DivX divx MKV mkv mka WebM webm 3GPP 3gpp 3gp MP4 mp4 mov m4a MPEG transport stream ts trp tp MPEG program stream dat vob mpg mpeg FLV flv WAV wav OGM ogm MPEG1 2 2 5 Layer 3 8 48KHz Up to 2 8 320Kbps MP3 mp3 AVI avi ASF asf WMV wmv DivX divx MKV mkv mka WebM webm 3GPP 3gpp 3gp MP4 mp4 mov m4a MPEG transport stream ts trp tp MPEG program stream dat vob mpg mpeg FLV flv WAV wav OGM ogm AAC LC HEAA...

Страница 60: ... ASF asf FLV flv OGM ogm LBR cook 8KHz 11 025 KHz 22 05KHz 44 1KHz Up to 2 8 96 469Kbps RM rm rmvb ra FLAC 8 192KHz Up to 5 1 128 2304Kbps MKV mkv mka WebM webm FLAC flac OPUS 8 48KHz Up to 5 1 6 510Kbps MKV mkv mka WebM webm APE 32KHz 44 1KHz 48KHz Up to 2 500Kbps 1 5Mpb APE ape AMR NB 8KHz 1 4 75 12 2Kbps 3GPP 3gpp 3gp MP4 mp4 mov m4a AMR WB 16KHz 1 6 6 23 85Kbps 3GPP 3gpp 3gp MP4 mp4 mov m4a Au...

Страница 61: ...VI avi MKV mkv WebM webm ASF asf WMV wmv FLV flv OGM ogm MPEG transport stream ts trp tp MPEG program stream dat vob mpg mpeg Sorenson H 263 1920x1080 60fps 80Mbps N A FLV flv AVI avi H 263 1920x1080 60fps 80Mbps N A FLV flv MP4 mp4 mov 3GPP 3gpp 3gp AVI avi ASF asf WMV wmv H 264 4096x2160 60fps 200Mbps Main High and High10 Profile up to Level 6 0 FLV flv MP4 mp4 mov 3GPP 3gpp 3gp MPEG transport s...

Страница 62: ...MPEG transport stream ts trp tp ASF asf WMV wmv AVI avi WebM webm 3GPP 3gpp 3gp MP4 mp4 mov VC1 vc1 Motion JPEG 1920x1080 30fps 30Mbps N A AVI avi 3GPP 3gpp 3gp MP4 mp4 mov m4a MKV mkv WebM webm FLV flv VP8 1920x1080 60fps 60Mbps N A MKV mkv WebM webm FLV flv 3GPP 3gpp 3gp MP4 mp4 mov AVI avi OGM ogm RV30 RV40 1920x1080 60fps 80Mbps N A RM rm rmvb MKV mkv WebM webm Video Codec Resolution Bit Rate ...

Страница 63: ...u to launch InstaShare 2 With this application you can mirror the screen on your smartphone or tablet on your display to share with others or to annotate with touch gestures Before launching the application make sure your display is properly connected to the lnternet ...

Страница 64: ...l RM7503 400 typical RM8603 400 typical Brightness without Glass Typical RM6503 400 typical RM7503 450 typical RM8603 450 typical Contrast Ratio Typical 1200 1 Viewing Angle 178 Touch Technology IR Touch Method Finger Stylus System Windows 7 8 10 XP Linux Mac Android Chrome OS Touch Point up to 40pts touch for Windows up to 32 pts touch for Android Minimum Object Size 2mm pen tip is 3 2mm 11mm sup...

Страница 65: ...ernal pass through MIC Camera USB Rear x 2 Front x 1 USB 3 0 RS232 x1 LAN RJ45 OPS 10M 100M 1000M Android 10M 100M LAN IN Out x 2 USB Type C x1 Data Power 65W Touch DP ALT mode Android System System Version Android 9 CPU A73 x 4 GPU G52 MC 2 RAM 8GB ROM 32GB Video Audio Speaker Type Built in speaker Output Power 16W 2 Power Power Requirements AC 100V 240V 50 60 Hz Standby Power 0 5W Max Power Cons...

Страница 66: ...ount VESA for NUC 100 x 100 mm Wall Hanging Screw Spec M8 20L x 4 VESA RM6503 600 x 400mm RM7503 800 x 400mm RM8603 800 x 600mm Accessories Power Cord By Region 3M x 1 VGA Cable 3M x 1 USB Cable Type A Type B _USB 3 0 3M x 1 Type C Cable 1 5 M x 1 HDMI Cable 3M x 1 Writing Pen 2 pcs Wall Mount x 1 Remote Control 1 pcs BenQ customized Features Image Setting Yes Source Volume Control Yes HDMI Daisy ...

Страница 67: ...reen Lock Yes Smart Sidebar Yes BenQ Customer API Yes Environment Operating Temperature 0 40oC Operating Humidity 10 90 without condensation Storage Temperature 10 60o C Storage Humidity 10 80 without condensation Display Orientation Landscape Only Item Specifications RM6503 RM7503 RM8603 Specifications and functions are subject to change without notice The product supports OPS Refer to BenQ OPS m...

Страница 68: ...Product information 68 Dimensions RM6503 Unit mm ...

Страница 69: ...Product information 69 Dimensions RM7503 Unit mm ...

Страница 70: ...Product information 70 Dimensions RM8603 Unit mm ...

Страница 71: ...024 x 768 60Hz 1280 x 768 60Hz 1280 x 960 60Hz 1280 x 1024 60Hz 1366 x 768 60Hz 1440 x 900 60Hz 1680 x 1050 60Hz 1920 x 1080 60Hz 3840 x 2160 24Hz 3840 x 2160 25Hz 3840 x 2160 30Hz 3840 x 2160 50Hz 3840 x 2160 60Hz 480i 60Hz 480p 60Hz 576i 50Hz 576p 50Hz 720p 50Hz 720p 60Hz 1080i 50Hz 1080i 60Hz 1080p 50Hz 1080p 60Hz supported Vacant not supported ...

Страница 72: ...on and try again No sound Check the following Have you turned on the mute function on the display or the input source device Turn off the mute function or increase the audio volume level and try again Are there any loose cable connections Make sure that all cables are connected firmly The computer input image looks strange Have you chosen an unsupported output resolution on the computer Refer to S...

Страница 73: ...ng to failure of remote control Check whether the battery electrode in the remote control is correct Check whether remote control needs to replace battery Machine automatically shutdown Whether set sleep or not Check whether there is sudden power outage Check whether there is no signal automatic shutdown Signal out of range Check whether display is set correctly Check whether resolution is the bes...

Страница 74: ...ools are placed around the machine No color color is weak or image is weak Adjust chromaticity and brightness or contrast in menu Check whether signal wire is well connected With image but without sound Check whether mute button is pressed for mute Press VOL VOL to adjust volume Check whether audio line is connected correctly Only one speaker has sound Adjust sound balance in menu Check whether co...

Страница 75: ...ailable by using the On Screen Display OSD controls on the products BenQ s displays include user selectable color controls such as color temperature selections IFP 5500K 9300K 12000K DS 6500K 9300K 12000K with a wide range of contrast levels BenQ s multimedia displays usually have one or two speakers for audio performance which allow users including hearing impaired to interact with the computer s...

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