LG 27UD88 User Manual

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www.lg.com

Please read the safety information carefully before using the product.

IPS LED Monitor (LED Monitor) Model List

Owner's Manual

IPS LED MONITOR

(LED MONITOR*)

*LG LED Monitors are LCD Monitors with LED Backlighting.

27UD88

Table of Contents

Questions and Answers:

H
Harold YangJul 27, 2025
What to do if nothing is displayed on my LG 27UD88 Monitor screen?
- S
  schmittlonnieJul 27, 2025
  If your LG Monitor screen is blank, there are several things you can check: * Ensure the power cord is securely plugged into the power outlet. * Verify the power cable connection and press the power button. * Confirm that the connected input is enabled by going to Menu > Quick Settings > Input. * If the monitor is in sleep mode, move the mouse or press any key on the keyboard. Also, check if the computer is turned on. * If the signal cable between the PC and the monitor is missing or disconnected, check the cable and reconnect it. * If signals transferred from the PC are out of the horizontal or vertical frequency range of the monitor, refer to the Product Specification section of this manual to set the appropriate frequency.
A
Angela BlackwellJul 31, 2025
What to do if there is no sound from the headphone port or speaker of my LG 27UD88?
- J
  Jacqueline FinleyJul 31, 2025
  If you're not getting any sound from the headphone port or speaker of your LG Monitor: * First, try increasing the volume using the button on the monitor. * If that doesn't work, set the audio output of the PC to the monitor you are using. On Microsoft Windows, go to Control Panel > Hardware and Sound > Sound and set the monitor as the default device.
K
Katherine CookAug 4, 2025
What to do if my LG 27UD88 Monitor screen display is unstable and shaky?
- J
  Jessica NelsonAug 4, 2025
  If your LG Monitor screen display is unstable and shaky, and images displayed on the monitor leave shadow trails, it may be due to the resolution being set to HDMI 1080i 60/50 Hz (interlaced). Try changing the resolution to 1080P or the recommended resolution.
G
gdavisAug 8, 2025
Why PC(or USB host device) cannot detect USB peripheral connected to USB-A port on LG 27UD88?
- J
  jasonwilsonAug 8, 2025
  When “Quick Charge” is set to On, the device will be charged quickly, but you cannot use USB data. When “Quick Charge” is set to Off, the device will be charged slowly, and you can use USB data.
C
Christopher MurrayAug 12, 2025
Why does my LG 27UD88 Monitor screen retain an image?
- C
  Christina BernardAug 12, 2025
  Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor, resulting in the retention of the image. To extend the lifetime of the monitor, use a screensaver.
M
marissa14Aug 17, 2025
Why is the display color abnormal on my LG 27UD88 Monitor?
- J
  Jill SimpsonAug 17, 2025
  If the display color on your LG Monitor appears abnormal: * Set the color to 24 bit (true color) or higher by navigating to Control Panel > Display > Settings > Color Quality in Windows. * Check if the signal cable is properly connected, and if not, reconnect the cable or reinsert the PC's graphics card. Note that sometimes this is not an error and is not related to the monitor's performance.
K
Kathleen SmithAug 21, 2025
How to fix the "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on my LG 27UD88 Monitor?
- G
  Gilbert EstradaAug 21, 2025
  To resolve the "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on your LG Monitor, install the display driver from the display driver CD (or diskette) that comes with your display. Alternatively, you can download the driver from http://www.lg.com. Also, ensure that your video card supports the Plug&Play function.

LG 27UD88 Specifications

General

3D	No
DDC/CI	Yes
Pixel pitch	0.1554 x 0.1554 mm
Screen shape	Flat
Display surface	Gloss
Display diagonal	27 \
Display technology	LED
Native aspect ratio	16:9
Contrast ratio (typical)	1000:1
Display number of colors	1.073 billion colors
Digital vertical frequency	56 - 61 Hz
Digital horizontal frequency	30 - 153 kHz
Display brightness (typical)	350 cd/m²
Supported graphics resolutions	3840 x 2160
Dynamic contrast ratio marketing name	Mega Contrast
Headphone connectivity	3.5 mm
VGA (D-Sub) ports quantity	0
AC input voltage	100 - 240 V
Power consumption (off)	0.3 W
Power consumption (standby)	0.5 W
Power consumption (typical)	60 W
Tilt angle range	-3 - 20 °
Height adjustment	110 mm
Number of OSD languages	17
Panel mounting interface	100 x 100 mm
On Screen Display (OSD) languages	Russian
On/off switch	-
Feet color	Silver
Certification	UL (cUL) FCC-B, CE EPA 6.0 ErP CCC, KC
Product color	Black
Market positioning	Gaming
Cables included	AC, DisplayPort, HDMI, USB
Package depth	171 mm
Package width	835 mm
Package height	476 mm
Package weight	10100 g
Sustainability certificates	EPEAT Gold
Windows operating systems supported	Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64

Weight and Dimensions

Depth (with stand)	222.6 mm
Width (with stand)	615 mm
Height (with stand)	425.2 mm
Weight (with stand)	6200 g
Depth (without stand)	42.7 mm
Height (without stand)	365.1 mm
Weight (without stand)	4700 g

Summary

LICENSE

ASSEMBLING AND PREPARING

Product Components

Lists all included items in the product box for setup.

Supported Drivers and Software

Lists drivers and software compatible with the product for download.

Component and Button Description

Identifies and explains the physical parts and buttons of the monitor.

Input Connector

Details the types and locations of all input ports on the monitor.

Moving and Lifting the Monitor

Provides instructions for safely moving and handling the monitor.

Installing the Monitor

Guide for assembling and installing the monitor stand and related components.

USING THE MONITOR

Connecting to a PC

Instructions for connecting the monitor to a personal computer via various ports.

Connecting to AV Devices

Guide for connecting audio-visual devices to the monitor using HDMI.

Connecting Peripherals

How to connect external devices like keyboards and mice using the USB hub.

Connecting Headphones

Steps for connecting headphones to the monitor's audio port.

Service only port

Information regarding the dedicated port used only for servicing.

USER SETTINGS

Activating the Main Menu

How to access and navigate the monitor's on-screen display (OSD) menu.

Customizing Settings

Adjusting various display parameters like brightness, contrast, and input.

Picture Settings

Detailed adjustments for picture modes, color, and calibration settings.

General Settings

Configuration options for language, power saving, and OSD lock.

Reset Settings

How to restore the monitor's settings to their default values.

TROUBLESHOOTING

Display Issues

Solutions for common problems like no display, image retention, or screen instability.

Connectivity Issues

Troubleshooting problems with PC or USB device detection.

Display Color and Recognition Problems

Addresses abnormal display colors and unrecognized monitor messages.

Audio Issues

Solutions for missing sound from the headphone port or speakers.

SPECIFICATIONS

Monitor Specifications

Detailed technical data including resolution, refresh rate, and dimensions.

Factory Support Mode

Lists preset modes for HDMI and DisplayPort/USB-C connections.

HDMI Timing (Video)

Specifies timing details for various video resolutions over HDMI.

Power LED Status

Explains the meaning of different LED colors and states.

PROPER POSTURE

Ergonomic Guidelines

Advice on setting up the monitor for comfortable and healthy viewing.

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