What to do if nothing is displayed on the screen of my LG UltraFine 27MD5KL?
If nothing is displayed on your LG Monitor's screen, first, connect your monitor to your Mac. The monitor will turn on automatically if the PC is operating normally. Also, check if the power cord is correctly plugged into the power outlet.
How to fix unstable and shaky screen display or shadow trails on my LG UltraFine 27MD5KL Monitor?
To resolve an unstable or shaky screen display, or images leaving shadow trails on your LG monitor, set your monitor to the recommended (optimal) resolution. Also, update your Mac OS or driver to the latest version.
Why can't I adjust the brightness on my LG UltraFine 27MD5KL and the ALS(Ambient Light Sensor) does not work?
If you cannot adjust the brightness on your LG Monitor and the ALS (Ambient Light Sensor) does not work, note that the ambient light sensor operates in accordance with Mac OS, as some Mac OS versions may not support the display ALS. You can also manually adjust the monitor brightness by controlling the menu or hot key of a host.
Why is the display color abnormal on my LG UltraFine 27MD5KL Monitor?
If the display color on your LG monitor is abnormal, ensure the signal cable is properly connected. Try reconnecting the cable or reinserting the PC's graphics card. Also, note that pixilated spots (red, green, blue, white, or black) may appear on the screen, which is normal for an LCD screen.
How to prevent image retention on my LG UltraFine 27MD5KL?
Displaying a still image for a prolonged time may cause damage to the screen. To extend the lifetime of your LG monitor and prevent image retention, use a screensaver.
General| 3D | No |
|---|---|
| HD type | 5K Ultra HD |
| Color gamut | 99 % |
| Pixel pitch | 0.11685 x 0.11685 mm |
| Screen shape | Flat |
| Response time | 14 ms |
| Display diagonal | 27 \ |
| Display resolution | 5120 x 2880 pixels |
| Display technology | LED |
| Native aspect ratio | 16:9 |
| Maximum refresh rate | 60 Hz |
| Contrast ratio (typical) | 1100:1 |
| Display number of colors | 1.073 billion colors |
| Display brightness (typical) | 500 cd/m² |
| Supported graphics resolutions | 5120 x 2880 |
| RMS rated power | 5 W |
| Number of speakers | 2 |
| TV tuner integrated | - |
| USB hub version | 3.2 Gen 1 (3.1 Gen 1) |
| USB upstream port type | USB Type-C |
| Number of upstream ports | 4 |
| Product color | Black |
| Market positioning | Home |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50 - 60 Hz |
| Energy efficiency scale | A to G |
| Power consumption (standby) | - W |
| Panel mounting interface | 100 x 100 mm |
| Package depth | 315 mm |
| Package width | 743 mm |
| Package height | 573 mm |
| Package weight | 13500 g |
| Harmonized System (HS) code | 85285210 |
Weight and Dimensions| Depth (with stand) | 239.9 mm |
|---|---|
| Height (with stand) | 574.4 mm |
| Weight (with stand) | 8500 g |
| Depth (without stand) | 53.8 mm |
| Width (without stand) | 625.6 mm |
| Height (without stand) | 375.1 mm |
| Weight (without stand) | 6400 g |
Thunderbolt and Thunderbolt logo are trademarks of Intel Corporation.
Mac and Mac logo are trademarks of Apple Inc.
Safety instructions for operating the display and handling the power cord.
Warnings about internal high voltages and user-serviceable components.
Precautions to prevent injury from improper placement or handling of the display.
Guidelines to prevent fire hazards, including unattended use and electrical hazards.
Instructions on placement, ventilation, and avoiding screen damage.
Safety guidelines for using the AC adapter and power cord.
How to safely clean the monitor screen and frame.
Advice on using original packaging for shipping or moving the unit.
Emphasizes using genuine components for safety and product performance.
Identifies components on the front of the display, including camera and sensors.
Identifies components on the back of the display, including ports and buttons.
Explains the function of the ambient light sensor for brightness control.
Details the available input ports, including USB and Thunderbolt/USB-C.
Explains where to find the monitor's ID and Sub ID labels.
Defines what information is contained on the monitor's ID and Sub ID labels.
Notes that the stand must be detached to view the ID label.
Provides instructions for safely moving and lifting the monitor to prevent damage.
Warns against touching the screen and using the monitor without the stand base.
Step-by-step guide for placing the monitor on a table with ventilation considerations.
Emphasizes using the supplied power cord and connecting to a grounded outlet.
Instructions on how to adjust the monitor's stand height.
Warnings about screen handling during height/angle adjustments.
Note about the ability to slightly rotate the monitor head left or right.
Steps for adjusting the screen's forward and backward angle.
Warning to avoid finger injury when adjusting the screen angle.
Information on connecting the Kensington security system.
Notes that the Kensington security system is optional and available separately.
Step-by-step instructions for removing the monitor stand.
Details on releasing stand hooks from the main unit slots.
Warning to be careful not to drop the stand during detachment.
Instructions for attaching the VESA design cover to the monitor.
Caution regarding ensuring the detach button is correctly positioned after attachment.
Steps for attaching the wall mount bracket to the monitor.
Ventilation, component availability, and vertical orientation advice.
Cautions on VESA cover, screw length, and secure wall attachment.
Cautions regarding cable quality, prolonged screen use, and hot plugs.
Notes on power connection, flickering, and screen spots.
Information on connecting the monitor to a computer host via Thunderbolt.
Instructions for connecting the monitor to a host using a USB-C cable.
Notes on Power Delivery, compatibility, and using supplied cables for USB-C.
Details on connecting peripheral USB devices to the expansion ports.
Notes that peripheral devices are sold separately.
Steps to take if the screen remains blank.
Explains image sticking and how to prevent it with screensavers.
Advice on resolution settings and updating OS/drivers for display issues.
Solutions for abnormal display color or monochrome appearance.
Explains that pixelated spots on the screen are normal for LCD.
Addresses issues with brightness adjustment and the ambient light sensor.
Details on screen type, color depth, and pixel pitch.
Specifies max and recommended resolutions for Thunderbolt and USB-C.
Information on horizontal and vertical frequencies.
Lists input ports, power sources, and power rating.
Details the adjustable range of the monitor stand angle.
Specifies operating and storing temperature and humidity limits.
Lists built-in audio-visual components.
Provides physical dimensions and weight with/without stand.
Clarifies power consumption measurement for ENERGY STAR.
Table detailing signal timing for various resolutions.
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