AOC CQ27G2SE-BK LCD Monitor User Manual

GAMING

LCD Monitor
User Manual
CQ27G2SE/BK

Contents hide

6 Documents / Resources

6.1 References

7 Related Posts

Safety

National Conventions
The following subsections describe notational conventions used in this document.
Notes, Cautions, and Warnings
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These
blocks are notes, cautions, and warnings, and they are used as follows:
NOTE: A NOTE indicates important information that helps you make better use of your computer system.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates the potential for bodily harm and tells you how to avoid the problem. Some warnings may appear in alternate formats and may be unaccompanied by an icon. In such cases, the specific presentation of the warning is mandated by regulatory authority.

Power
The monitor should be operated only from the type of power source indicated on the label. If you are not sure of the type of power supplied to your home, consult your dealer or local power company.
The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This plug will fit only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of the grounded plug.
Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will protect the monitor from damage due to power surges.
Do not overload power strips and extension cords. Overloading can result in fire or electric shock.
To ensure satisfactory operation, use the monitor only with UL listed computers which have appropriate configured receptacles marked between 100-240V AC, Min. 5A.
The wall socket shall be installed near the equipment and shall be easily accessible.

Installation
Do not place the monitor on an unstable cart, stand, tripod, bracket, or table. If the monitor falls, it can injure a person and cause serious damage to this product. Use only a cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with this product. Follow the manufacturer’s instructions when installing the product and use mounting accessories recommended by the manufacturer. A product and cart combination should be moved with care.
Never push any object into the slot on the monitor cabinet. It could damage circuit parts causing a fire or electric shock. Never spill liquids on the monitor.
Do not place the front of the product on the floor.
If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacturer and follow the kit instructions.
Leave some space around the monitor as shown below. Otherwise, air-circulation may be inadequate hence overheating may cause a fire or damage to the monitor.
To avoid potential damage, for example the panel peeling from the bezel, ensure that the monitor does not tilt downward by more than -5 degrees. If the -5 degree downward tilt angle maximum is exceeded, the monitor damage will not be covered under warranty.
See below the recommended ventilation areas around the monitor when the monitor is installed on the wall or on the stand:
Installed with stand

Cleaning
Clean the cabinet regularly with a water-dampened, soft cloth.
When cleaning use a soft cotton or microfiber cloth. The cloth should be damp and almost dry, do not allow liquid into the case.

Please disconnect the power cord before cleaning the product.

Other
If the product is emitting a strange smell, sound or smoke, disconnect the power plug IMMEDIATELY and contact a Service Center.
Make sure that the ventilating openings are not blocked by a table or curtain.
Do not engage the LCD monitor in severe vibration or high impact conditions during operation.
Do not knock or drop the monitor during operation or transportation.

Setup

Contents in Box

Not all signal cables (DP, HDMI cables) will be provided for all countries and regions. Please check with the local dealer or AOC branch office for confirmation.
Setup Stand & Base
Please setup or remove the base following the steps as below.

Adjusting Viewing Angle
For optimal viewing it is recommended to look at the full face of the monitor, then adjust the monitor’s angle to your own preference.
Hold the stand so you will not topple the monitor when you change the monitor’s angle.
You are able to adjust the monitor as below:

NOTE:
Do not touch the LCD screen when you change the angle. Touching the LCD screen may cause damage.
Warning：

To avoid potential screen damage, such as panel peeling, ensure that the monitor does not tilt downward by more than -5 degrees.
Do not press the screen while adjusting the angle of the monitor. Grasp only the bezel.

Connecting the Monitor
Cable Connections In Back of Monitor.

HDMI-2
HDMI-1
DP
Earphone
Power

Connect to PC

Connect the power cord to the back of the display firmly.
Turn off your computer and unplug its power cable.
Connect the display signal cable to the video connector on your computer.

Plug the power cord of your computer and your display into a nearby outlet.
Turn on your computer and display.

If your monitor displays an image, installation is complete. If it does not display an image, please refer Troubleshooting.
To protect equipment, always turn off the PC and LCD monitor before connecting.

Wall Mounting
Preparing to Install An Optional Wall Mounting Arm.

This monitor can be attached to a wall mounting arm you purchase separately. Disconnect power before this procedure.
Follow these steps:

Remove the base.
Follow the manufacturer’s instructions to assemble the wall mounting arm.
Place the wall mounting arm onto the back of the monitor. Line up the holes of the arm with the holes in the back of the monitor.

Reconnect the cables. Refer to the user’s manual that came with the optional wall mounting arm for instructions on attaching it to the wall.

Noted: VESA mounting screw holes are not available for all models, please check with the dealer or official department of AOC.

* Display design may differ from those illustrated.

Warning：

To avoid potential screen damage, such as panel peeling, ensure that the monitor does not tilt downward by more than -5 degrees.
Do not press the screen while adjusting the angle of the monitor. Grasp only the bezel.

Adaptive-Sync function (Available for selective models)

Adaptive-Sync function is working with DP/HDMI
Compatible Graphics Card: Recommend list is as the below, also could be checked by visiting www.AMD.com
Graphics Cards
• Radeon™ RX Vega series
• Radeon™ RX 500 series
• Radeon™ RX 400 series
• Radeon™ R9/R7 300 series （R9 370/X, R7 370/X, R7 265 except）
• Radeon™ Pro Duo (2016)
• Radeon™ R9 Nano series
• Radeon™ R9 Fury series
• Radeon™ R9/R7 200 series (R9 270/X, R9 280/X except)
Processors
• AMD Ryzen™ 7 2700U
• AMD Ryzen™ 5 2500U
• AMD Ryzen™ 5 2400G
• AMD Ryzen™ 3 2300U
• AMD Ryzen™ 3 2200G
• AMD PRO A12-9800
• AMD PRO A12-9800E
• AMD PRO A10-9700
• AMD PRO A10-9700E
• AMD PRO A8-9600
• AMD PRO A6-9500
• AMD PRO A6-9500E
• AMD PRO A12-8870
• AMD PRO A12-8870E
• AMD PRO A10-8770
• AMD PRO A10-8770E
• AMD PRO A10-8750B
• AMD PRO A8-8650B
• AMD PRO A6-8570
• AMD PRO A6-8570E
• AMD PRO A4-8350B
• AMD A10-7890K
• AMD A10-7870K
• AMD A10-7850K
• AMD A10-7800
• AMD A10-7700K
• AMD A8-7670K
• AMD A8-7650K
• AMD A8-7600
• AMD A6-7400K

AMD FreeSync Premium function (Available for selective models)

AMD FreeSync Premium function is working with DP/HDMI
Compatible Graphics Card: Recommend list is as the below, also could be checked by visiting www.AMD.com
Graphics Cards
• Radeon™ RX Vega series
• Radeon™ RX 500 series
• Radeon™ RX 400 series
• Radeon™ R9/R7 300 series （R9 370/X, R7 370/X, R7 265 except）
• Radeon™ Pro Duo (2016)
• Radeon™ R9 Nano series
• Radeon™ R9 Fury series
• Radeon™ R9/R7 200 series (R9 270/X, R9 280/X except)
Processors
• AMD Ryzen™ 7 2700U
• AMD Ryzen™ 5 2500U
• AMD Ryzen™ 5 2400G
• AMD Ryzen™ 3 2300U
• AMD Ryzen™ 3 2200G
• AMD PRO A12-9800
• AMD PRO A12-9800E
• AMD PRO A10-9700
• AMD PRO A10-9700E
• AMD PRO A8-9600
• AMD PRO A6-9500
• AMD PRO A6-9500E
• AMD PRO A12-8870
• AMD PRO A12-8870E
• AMD PRO A10-8770
• AMD PRO A10-8770E
• AMD PRO A10-8750B
• AMD PRO A8-8650B
• AMD PRO A6-8570
• AMD PRO A6-8570E
• AMD PRO A4-8350B
• AMD A10-7890K
• AMD A10-7870K
• AMD A10-7850K
• AMD A10-7800
• AMD A10-7700K
• AMD A8-7670K
• AMD A8-7650K
• AMD A8-7600
• AMD A6-7400K

G-SYNC Compatible function(Available for selective models)

G-SYNC Compatible function is working with DP/HDMI
To enjoy the perfect gaming experience with G-SYNC, you need to purchase a Separate NVIDIA GPU card that supports G-SYNC.

G-sync system requirements
Desktop computer connected to G-SYNC monitor:
Graphics cards supported: G-SYNC features require NVIDIA GeForce® GTX 650 Ti BOOST or higher graphics cards.
Driver: R340.52 or later
Operating system:
Windows 10
Windows 8.1
Windows 7
System requirements: DisplayPort 1.2 of the GPU must be supported.
Notebook computer connected to G-SYNC monitor:
Supported graphics cards: NVIDIA GeForce® GTX 980M, GTX 970M, GTX 965M GPU or higher graphics cards
Driver: R340.52 or higher
Operating system:
Windows 10
Windows 8.1
Windows 7
System requirements: DisplayPort 1.2 driven directly from the GPU must be supported.
For more information about NVIDIA G-SYNC, please visit: https://www.nvidia.cn/

HDR
It is compatible with input signals in HDR10 format.
The display may automatically activate the HDR function if the player and content are compatible. Please contact the device manufacturer and the content provider for information on the compatibility of your device and content. Please select “OFF” for the HDR function when you have no need for automatical activation function.
Note:

No special setting is needed for the DisplayPort/HDMI interface in WIN10 versions lower (older) than V1703.

Only the HDMI interface is available and the DisplayPort interface cannot function in WIN10 version V1703.
3840×2160 @50Hz /60Hz not suggestion used in PC device only for UHD player or Xbox-ones / PS4-Pro.
a. The display resolution is set to 2560*1440, and HDR is preset to ON.
b. After entering an application, the best HDR effect can be achieved when the resolution is changed to 2560*1440 (if available).

Adjusting

Hotkeys

1	Source/Exit
2	Game Mode/<
3	Dial Point/>
4	Menu/Enter
5	Power

Power
Press the Power button to turn on the monitor.
Menu/Enter
When there is no OSD, Press to display the OSD or confirm the selection. Press about 2 second to turn off the monitor.
Game Mode/<
When there is no OSD, press ”<” key to open game mode function, then press ”<” or “>” key to select game mode (FPS, RTS, Racing, Gamer 1, Gamer 2 or Gamer 3) basing on the different game types.
Dial Point/>
When there is no OSD, press Dial Point button to show / hide Dial Point.
Source/Exit
When the OSD is closed, press Source/Exit button will be Source hot key function.
When the OSD is closed, press Source/Exit button continuously about 2 second to do auto configure (Only for the models with D-Sub).

OSD Setting
Basic and simple instruction on the control keys.

Press the MENU-button to activate the OSD window.
Press < or > to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate it, press < or > to navigate through the sub-menu functions. Once the desired function is highlighted, press MENU-button to activate it.
Press < or > to change the settings of the selected function. Press AUTO–button to exit. If you want to adjust any other function, repeat steps 2-3.
OSD Lock Function: To lock the OSD, press and hold the MENU-button while the monitor is off and then press power button to turn the monitor on. To un-lock the OSD – press and hold the MENU-button while the monitor is off and then press power button to turn the monitor on.

Notes:

If the product has only one signal input, the item of “Input Select” is disable to adjust.
DCR, Color Boost and Picture Boost, for these states that only one state can exist

Luminance

Contrast	0-100	Contrast from Digital-register.
Brightness	0-100	Backlight Adjustment
Eco mode	Standard	Standard Mode
	Text	Text Mode
	Internet	Internet Mode
	Game	Game Mode
	Movie	Movie Mode
	Sports	Sports Mode
	Reading	Reading Mode
Gamma	Gamma1	Adjust to Gamma 1
	Gamma2	Adjust to Gamma 2
	Gamma3	Adjust to Gamma 3
DCR	Off	Disable dynamic contrast ratio
DCR	On	Enable dynamic contrast ratio
HDR	Off / DisplayHDR / HDR Picture / HDR Movie / HDR Game	Disable or Enable HDR
HDR Mode	Off / HDR Picture / HDR Movie / HDR Game	Disable or Enable HDR Mode

Note:
When HDR is detected, the HDR option is displayed for adjustment;
when HDR is not detected, the HDR Mode option is displayed for adjustment.

Color Setup

Color Temp.	Warm	Recall Warm Color Temperature from EEPROM.
	Normal	Recall Normal Color Temperature from EEPROM.
	Cool	Recall Cool Color Temperature from EEPROM.
	User	Restore Color Temperature from EEPROM.
Color Gamut	Panel Native	Standard color space panel.
Color Gamut	sRGB	Recall SRGB Color Temperature from EEPROM.
LowBlue Mode	Reading / Office / Internet / Multimedia / Off	Decrease blue light wave by controlling color temperature.
Red	0-100	Red gain from Digital-register.
Green	0-100	Green gain from Digital-register.
Blue	0-100	Blue gain from Digital-register.
DCB Mode	Full Enhance	Disable or Enable Full Enhance Mode
	Nature Skin	Disable or Enable Nature Skin Mode
	Green Field	Disable or Enable Green Field Mode
	Sky-blue	Disable or Enable Sky-blue Mode
	AutoDetect	Disable or Enable AutoDetect Mode
	Off	Disable or Enable DCB Mode
DCB Demo	On or Off	Disable or Enable Demo

Note:
When the “HDR Mode” under “Luminance” is set to a non-off state, all items under “Color Setup” cannot be adjusted.

Picture Boost

Bright Frame	on or off	Disable or Enable Bright Frame
Frame Size	14-100	Adjust Frame Size
Brightness	0-100	Adjust Frame Brightness
Contrast	0-100	Adjust Frame Contrast
H. position	0-100	Adjust Frame horizontal Position
V. position	0-100	Adjust Frame vertical Position

Note:
When the “HDR Mode” under “Luminance” is set to a non-off state, all items under “Picture Boost” cannot be adjusted.

OSD Setup

Language		Select the OSD language
Timeout	5-120	Adjust the OSD Timeout
DP Capability	1.1/1.2/1.4	Please be noted that only DP1.2/1.4 support Adaptive- Sync/AMD FreeSync Premium/G-SYNC function
H. Position	0-100	Adjust the horizontal position of OSD
V. Position	0-100	Adjust the vertical position of OSD
Volume	0-100	Volume Adjustment.
Transparence	0-100	Adjust the transparence of OSD
Break Reminder	on or off	Break reminder if the user continuously work for more than 1hrs

Note:
If the DP video content supports DP1.2/1.4, please select DP1.2/1.4 for DP Capability; otherwise, please select DP1.1

Game Setting

Game Mode	FPS	For playing FPS (first Person Shooters) games. Improves dark theme black level details.
	RTS	For playing RTS (Real Time Strategy). Improves the image quality.
	Racing	For playing Racing games, Provides fastest response time and high color saturation.
	Gamer 1	User’s preference settings saved as Gamer 1.
	Gamer 2	User’s preference settings saved as Gamer 2.
	Gamer 3	User’s preference settings saved as Gamer 3.
	off	No optimization by Game Mode.
Shadow Control	0-100	Shadow Control Default is 50, then end-user can adjust from 50 to 100 or 0 to increase contrast for clear picture. 1. If picture is too dark to be saw the detail clearly, adjusting from 50 to100 for clear picture. 2. If picture is too white to be saw the detail clearly, adjusting from 50 to0 for clear picture
Low Input Lag	On/Off	It will decrease input lag and depends on Adaptive- Sync/AMD FreeSync Premium/G-SYNC setting.
Game Color	0-20	Game Color will provide 0-20 level for adjusting saturation to get better picture.
Overdrive	Weak	Adjust the response time.
	Medium
	Strong
	Boost
	Off
Adaptive-Sync/ AMD FreeSync/ G-SYNC (Available for selective models)	On/Off	Adjust the Adaptive-Sync/AMD FreeSync Premium/ G-SYNC.
Frame Counter	Off / Right-up / Right-Down / Left- Down / Left-Up	Display V frequency on the corner selected
MBR	0 ~ 20	Adjust the Motion Blur Reduction.

Note:
The function MBR and Overdrive Boost are available only when Adaptive-Sync/AMD FreeSync Premium/G-SYNC is off and the vertical frequency is up to 75 Hz.

Extra

Input Select		Select Input Signal Source
Off timer	0-24hrs	Select DC off time
Image Ratio	Wide	Select image ratio for display.
	4:3
	1:1
	17” (4:3)
	19” (4:3)
	19” (5:4)
	19”W (16:10)
	21.5”W (16:9)
	22”W (16:10)
	23”W (16:9)
	23.6”W (16:9)
	24”W (16:9)
DDC/CI	yes or no	Turn ON/OFF DDC/CI Support
Reset	Yes or no	Reset the menu to default

Exit

Exit

Exit the main OSD

LED Indicator

Status	LED Color
Full Power Mode	White
Active-off Mode	Orange

Troubleshoot

Problem & Question	Possible Solutions
Power LED Is Not ON	Make sure the power button is ON and the Power Cord is properly connected to a grounded power outlet and to the monitor.
No images on the screen	Is the power cord connected properly? Check the power cord connection and power supply. Is the video cable connected correctly??(Connected using the VGA cable) Check the VGA cable connection. (Connected using the HDMI cable) Check the HDMI cable connection. (Connected using the DP cable) Check the DP cable connection.* VGA/HDMI/DP input is not available on every model. If the power is on, reboot the computer to see the initial screen (the login screen.) If the initial screen (the login screen) appears, boot the computer in the applicable mode (the safe mode for Windows 7/8/10) and then change the frequency of the video card. (Refer to the Setting the Optimal Resolution) If the initial screen (the login screen) does not appear, contact the Service Center or your dealer. Can you see “Input Not Supported” on the screen? You can see this message when the signal from the video card exceeds the maximum resolution and frequency that the monitor can handle properly. Adjust the maximum resolution and frequency that the monitor can handle properly. Make sure the AOC Monitor Drivers are installed.
Picture Is Fuzzy & Has Ghosting Shadowing Problem	Adjust the Contrast and Brightness Controls. Press hot-key (AUTO) to auto-adjust. Make sure you are not using an extension cable or switch box. We recommend plugging the monitor directly to the video card output connector on the back.
Picture Bounces, Flickers Or Wave Pattern Appears In The Picture	Move electrical devices that may cause electrical interference as far away from the monitor as possible. Use the maximum refresh rate your monitor is capable of at the resolution you are using.
Monitor Is Stuck In Active Off- Mode”	The Computer Power Switch should be in the ON position. The Computer Video Card should be snugly fitted in its slot. Make sure the monitor’s video cable is properly connected to the computer. Inspect the monitor’s video cable and make sure no pin is bent. Make sure your computer is operational by hitting the CAPS LOCK key on the keyboard while observing the CAPS LOCK LED. The LED should either turn ON or OFF after hitting the CAPS LOCK key.
Missing one of the primary colors (RED, GREEN, or BLUE)	Inspect the monitor’s video cable and make sure that no pin is damaged. Make sure the monitor’s video cable is properly connected to the computer.
Screen image is not centered or sized properly	Adjust H-Position and V-Position or press hot-key (AUTO).
Picture has color defects (white does not look white)	Adjust RGB color or select desired color temperature.
Horizontal or vertical disturbances on the screen	Use Windows 7/8/10 shut-down mode to adjust CLOCK and FOCUS. Press hot-key (AUTO) to auto-adjust.
Regulation & Service	Please refer to Regulation & Service Information which is in the CD manual or www.aoc.com (to find the model you purchase in your country and to find Regulation & Service Information in Support page.)

Specification

General Specification

Panel	Model name	CQ27G2SE/BK
	Driving system	TFT Color LCD
	Viewable Image Size	68.5 cm diagonal
	Pixel pitch	0.2331mm(H) x 0.2331mm(V)
Others	Horizontal scan range	30k-230kHz (HDMI) 30k-250kHz (DP)
	Horizontal scan Size(Maximum)	596.736mm
	Vertical scan range	48-144Hz (HDMI) 48-165Hz (DP)
	Vertical Scan Size(Maximum)	335.664mm
	Optimal preset resolution	2560×1440@60Hz
	Max resolution	2560×1440@144Hz (HDMI) 2560×1440@165Hz (DP)
	Plug & Play	VESA DDC2B/CI
	Power Source	100-240V~, 50/60Hz, 1.5A
	Power Consumption	Typical(Default brightness and contrast)		32W
		Max. (brightness = 100, contrast =100)		≤ 55W
		Standby mode		≤ 0.5W
Physical Characteristics	Connector Type	HDMIx2/DP/Earphone
	Signal Cable Type	Detachable
Environmental	Temperature	Operating	0°C~ 40°C
		Non-Operating	-25°C~ 55°C
	Humidity	Operating	10% ~ 85% (non-condensing)
		Non-Operating	5% ~ 93% (non-condensing)
	Altitude	Operating	0~ 5000 m (0~ 16404ft )
		Non-Operating	0~ 12192m (0~ 40000ft )

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Preset Display Modes

STANDARD	RESOLUTION (±1Hz)	HORIZONTAL FREQUENCY(kHz)	VERTICAL FREQUENCY(Hz)
VGA	640×480@60Hz	31.469	59.94
	640×480@72Hz	37.861	72.809
	640×480@75Hz	37.5	75
	640×480@100Hz	50.313	99.826
	640×480@120Hz	60.938	119.72
SVGA	800×600@56Hz	35.156	56.25
	800×600@60Hz	37.879	60.317
	800×600@72Hz	48.077	72.188
	800×600@75Hz	46.875	75
	800×600@100Hz	62.76	99.778
	800×600@120Hz	76.302	119.972
XGA	1024×768@60Hz	48.363	60.004
	1024×768@70Hz	56.476	70.069
	1024×768@75Hz	60.023	75.029
	1024×768@100Hz	80.448	99.811
	1024×768@120Hz	97.551	119.989
SXGA	1280×1024@60Hz	63.981	60.02
SXGA	1280×1024@75Hz	79.976	75.025
FHD	1920×1080@60Hz	67.5	60
FHD	1920×1080@120Hz	139.1	119.93
QHD	2560×1440@60Hz	88.787	59.951
	2560×1440@120Hz	182.997	119.998
	2560×1440@144Hz	222.056	143.912
	2560×1440@165Hz(DP)	242.55	165
IBM MODES
DOS	720×400@70Hz	31.469	70.087
MAC MODES
VGA	640×480@67Hz	35	66.667
SVGA	832×624@75Hz	49.725	74.551
XGA	1024×768@75Hz	60.241	74.927

Note: According to the VESA standard, there may be a certain error (+/-1Hz) when calculating the refresh rate (field frequency) of different operating systems and graphics cards. In order to improve compatibility, the nominal refresh rate of this product has been rounded off. Please refer to the actual product.

Pin Assignments

19-Pin Color Display Signal Cable

Pin No.	Signal Name	Pin No.	Signal Name	Pin No.	Signal Name
1.	TMDS Data 2+	9.	TMDS Data 0-	17.	DDC/CEC Ground
2.	TMDS Data 2 Shield	10.	TMDS Clock +	18.	+5V Power
3.	TMDS Data 2-	11.	TMDS Clock Shield	19.	Hot Plug Detect
4.	TMDS Data 1+	12.	TMDS Clock-
5.	TMDS Data 1Shield	13.	CEC
6.	TMDS Data 1-	14.	Reserved (N.C. on device)
7.	TMDS Data 0+	15.	SCL
8.	TMDS Data 0 Shield	16.	SDA

20-Pin Color Display Signal Cable

Pin No.	Signal Name	Pin No.	Signal Name
1	ML_Lane 3 (n)	11	GND
2	GND	12	ML_Lane 0 (p)
3	ML_Lane 3 (p)	13	CONFIG1
4	ML_Lane 2 (n)	14	CONFIG2
5	GND	15	AUX_CH(p)
6	ML_Lane 2 (p)	16	GND
7	ML_Lane 1 (n)	17	AUX_CH(n)
8	GND	18	Hot Plug Detect
9	ML_Lane 1 (p)	19	Return DP_PWR
10	ML_Lane 0 (n)	20	DP_PWR

Plug and Play
Plug & Play DDC2B Feature
This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional informationabout its display capabilities.
The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID information over the DDC2B channel.