KTC G27P6 OLED Monitor Help: Set Up, Connect, Use KVM, and Fix Common Problems

User manuals

Use this guide when you are setting up a KTC G27P6 OLED gaming monitor, connecting HDMI, DisplayPort, Type-C, or USB, using KVM, getting 1440p at high refresh rate, or fixing common display problems.

What Should I Know Before Setting Up the Monitor?

Before you assemble the stand, connect cables, or power on the display, set up the G27P6 in a way that protects the OLED panel and makes first-time troubleshooting easier.

Use the included adapter, or one that matches DC 24V / 7A.
Place the monitor screen-side down only on a clean, soft, flat surface.
Do not press directly on the OLED panel.
For first-time video setup, use one direct HDMI or DP cable.
Add docks, adapters, KVM switches, hubs, splitters, or extension cables only after the monitor is working normally.
Keep the original packaging when possible for moving, returns, or service.

If the first connection does not show an image, testing with one direct cable first is the fastest way to narrow down the issue.

What Comes in the KTC G27P6 Box?

Monitor x1
Base x1
Warranty card x1
QSG x1
User guide x1
DP signal cable x1
Type-C signal cable x1
HDMI signal cable x1
Adapter x1
Power cord x1

If something is missing, contact KTC support or the seller. Include your order details, the model number, the package condition, and a photo of what you received.

How Do I Install the Monitor Stand?

Use this section if you are searching for how to assemble the G27P6 base or how to attach the stand before putting the monitor on your desk.

Lay the monitor face down on a clean, soft, flat surface.
Align the stand/base assembly with the monitor mounting area.
Insert the stand neck into the monitor connection point.
Tighten the fastening screw or hand screw until the base is secure.
Lift the monitor carefully and confirm the base does not wobble.

If the base does not align correctly, check the orientation before applying more force.

Where Should I Place the Monitor for Better Airflow?

Use this section if you want to know where to place the G27P6 on your desk, how much space it needs, or how to keep the monitor from getting too hot.

Place the monitor on a stable, level desk, or use suitable wall-mount hardware.
Leave about 4 inches (10 cm) of open space around the sides shown in the manual.
Leave about 12 inches (30 cm) above the display.
Keep about 3 inches (7 cm) of rear clearance for base installation where possible.
Do not cover the ventilation openings.
Keep it away from vibration, insects, direct air-conditioner airflow, strong electromagnetic fields, strong light, heat, and humidity.

How Do I Connect Power to the KTC G27P6?

Use this section if the monitor will not turn on, you are checking the correct adapter, or you are setting the display up for the first time.

Check that the adapter label matches DC 24V / 7A.
Connect the adapter to the monitor DC 24V port.
Connect the power cord to the adapter.
Plug the power cord into a grounded wall outlet.
Press the joystick/power button to turn the monitor on.

The manual lists normal power use as up to 100W without Type-C and up to 168W with Type-C. Standby power use is listed as up to 0.5W.

How Do I Connect Video to a PC, Console, or Laptop?

Use this section if you are searching for how to connect the G27P6 through HDMI, DisplayPort, or Type-C.

Connect one end of an HDMI or DP cable to your computer, console, or source device.
Connect the other end to HDMI 1, HDMI 2, or DP on the monitor.
Turn on your device and the monitor.
Open the input/source menu and choose the port you used.
If no image appears, reconnect both cable ends and test a direct cable.

The package includes a Type-C signal cable and the port diagram lists TYPE-C; the original manual describes Type-C mainly in the USB/KVM connection section.

How Do I Connect HDMI to the G27P6?

Use this section if you want a direct HDMI connection on the KTC G27P6.

Connect one end of an HDMI cable to your computer, console, or other source device.
Connect the other end to HDMI 1 or HDMI 2 on the monitor.
Turn on your device and the monitor.
Open the input/source menu and choose the HDMI port you used.
If no image appears, reconnect both cable ends and test a direct cable.

If the picture still does not appear, remove docks, adapters, hubs, splitters, and extension cables for the first test.

How Do I Connect DisplayPort to the G27P6?

Use this section if you want a direct DisplayPort connection on the KTC G27P6.

Connect one end of a DP cable to your computer or other source device.
Connect the other end to the monitor DP input.
Turn on your device and the monitor.
Open the input/source menu and choose DP.
If no image appears, reconnect both cable ends and test a direct cable.

For the first setup, use one direct DP cable before adding adapters or other accessories.

How Do I Connect USB-C or Type-C on the G27P6?

Use this section if you want to use the TYPE-C connection on the KTC G27P6.

Connect the Type-C signal cable between your computer and the monitor TYPE-C port.
If you also want keyboard, mouse, or other USB devices to work through the monitor, follow the USB and KVM connection steps for the upstream path.
If the monitor does not show an image, reconnect the cable directly and remove docks or adapters for testing.

The package includes a Type-C signal cable, and the original manual describes Type-C mainly in the USB and KVM connection path.

How Do I Use USB and KVM on the G27P6?

Use this section if you want your keyboard, mouse, or USB accessories connected to the monitor to follow the selected computer.

Connect USB UP to your computer with a USB 3.0 Type-B cable, or connect TYPE-C to your computer with the Type-C cable.
Connect your USB devices to USB 1 or USB 2.
Move the joystick right to open the KVM shortcut.
Select the KVM port that matches the upstream connection.
If a USB device does not work, check the upstream cable first.

If KVM is not switching correctly, confirm the USB upstream path before troubleshooting the keyboard or mouse.

How Do I Use Headphones or Speakers with the Monitor?

Use this section if your headphones are plugged into the monitor but there is no sound, or if you want to connect external speakers.

Connect headphones or external speakers to the headphone/audio output jack.
Make sure the active video connection carries audio.
If there is no sound, check the monitor volume, source-device audio output, and app or game volume.

How Do I Turn the G27P6 On or Off?

Use this section if you are looking for the power button or wondering how to shut the monitor down properly.

Confirm power and video cables are connected.
Short-press the joystick/power button to turn on the display or show the menu.
To turn it off, press and hold the joystick/power button for about 3 seconds.
If you will not use it for a long time, turn it off and unplug the power cord.

How Do I Use the Joystick Menu?

Joystick action	Shortcut before opening the menu
Move up	Input source
Move down	Brightness
Move left	Gaming assistance
Move right	KVM
Press inward	Show the menu
Press and hold	Turn off the display

Inside the menu, move up or down to navigate, move left to return, and move right to open or confirm.

How Do I Adjust Brightness and Contrast on the G27P6?

Use this section if the picture looks dim or too dark while gaming or working.

Move the joystick down to open the brightness shortcut.
Increase brightness gradually.
Adjust contrast after brightness feels comfortable.
Try a standard picture preset for comparison.

If the picture still does not look right, recheck the active input, source-device settings, and connected cable.

How Do I Set the Monitor to 1440p and Up to 240Hz?

Use this section if the image looks blurry, the refresh rate option is missing, or you want the best gaming setup on the G27P6.

Open display settings on your computer, console, or graphics control panel.
Select the KTC G27P6.
Set the resolution to 2560 x 1440.
Select a refresh rate up to 240Hz if the full signal path supports it.
If the image is unstable, test 2560 x 1440 @ 60Hz, then increase the refresh rate step by step.
If 240Hz is not available, test a direct connection, another port, another cable, or another source device.

The source specification lists visible area as 586.75 mm x 330.05 mm, contrast as 1500000:1, and pixel pitch as 0.2292 mm x 0.2292 mm.

How Do I Mount the G27P6 Monitor on a Wall or Monitor Arm?

Use this section if you are searching for how to mount the monitor on a wall, how to use a monitor arm, or what VESA size the G27P6 uses.

Turn the monitor off and unplug all cables.
Remove the base assembly.
Use a wall mount or monitor arm compatible with 75 mm x 75 mm.
Have wall installation handled by a qualified installer.
Confirm the mount, screws, and load rating are suitable before reconnecting cables.

The manual lists net weight including base as about 5.2 kg, with packing weight about 10.2 kg.

How Do I Clean and Store the OLED Monitor Safely?

Use this section if the screen has dust or fingerprints, or if you need to store the monitor safely.

Turn off and unplug the monitor before cleaning.
Wipe the screen gently with a soft, slightly damp cloth.
Use LCD screen cleaner only for stubborn stains.
Do not spray liquid directly onto the screen or shell.
Do not press the screen with fingers or hard objects.
Store it in a dry, ventilated place away from heat, humidity, sunlight, and panel pressure.

Troubleshooting KTC G27P6 OLED Monitor Problems

Why Won't My KTC G27P6 Monitor Turn On?

Confirm that the adapter is connected to the monitor.
Confirm that the power cord is connected to the adapter and outlet.
Test the outlet with another device.
Press the joystick/power button once and wait 10 seconds.

Why Does the Monitor Have Power but No Image?

Use this section if the power light is on, the screen is black, or the monitor says no signal.

Press the joystick and check whether the on-screen menu appears.
If the menu appears, choose the input that matches your cable.
Reconnect the cable at both ends.
Use one direct cable and remove adapters, hubs, docks, KVM switches, splitters, and extension cables.
Test at 2560 x 1440 @ 60Hz, then raise the refresh rate after the image appears.

Why Do USB Devices Not Work Through the Monitor?

Use this section if your keyboard, mouse, or receiver is plugged into the monitor but your computer is not detecting it.

Check the USB UP or TYPE-C upstream cable.
Confirm the KVM selection matches the upstream connection.
Reconnect the USB device to USB 1 or USB 2.
Test another USB device if available.

Why Does the Screen Look Too Dark?

Use this section if the picture looks dim or too dark while gaming or working.

Move the joystick down to open the brightness shortcut.
Increase brightness gradually.
Adjust contrast after brightness feels comfortable.
Try a standard picture preset for comparison.

Why Does the Monitor Feel Too Hot?

Use this section if the shell feels unusually warm during use.

Leave open space around the display.
Remove anything covering ventilation openings.
Move it away from heat sources and direct sunlight.
Turn it off and let it cool if the shell feels unusually hot.

Why Is the Image Flickering, Shaking, or Distorted?

Use this section if the picture flickers, shakes, cuts out, or looks wrong at high refresh rates.

Lower the refresh rate to 60Hz for testing.
Make sure the cable is fully inserted at both ends.
Use the recommended resolution and a refresh rate your device supports.
Test another cable, input port, or source device.

Why Does the Image Look Blurry or the Wrong Size?

Use this section if the image looks soft, the wrong size, or improperly scaled.

Set the source device to 2560 x 1440.
Check scaling settings on your computer or console.
Treat image auto adjust as a VGA-only troubleshooting note; this model does not list VGA in the port diagram.

Why Do Dark or Bright Spots Appear After Power-On?

Slight uneven brightness can appear when the monitor is first powered on, especially after a temperature change. Leave it on for about 20 minutes and check again.

Is a Brief Flash or Small Sound When Turning Off Normal?

A brief flash or small electrical sound can happen during normal power-down. If it continues during normal use, troubleshoot it as an image issue or contact support.

Frequently Asked Questions

My monitor is turned on, but the screen is completely black. How do I fix this?

First, press the joystick to see if the on-screen menu appears. If it does, make sure you have selected the correct input for your cable, such as HDMI or DisplayPort. If the menu does not appear, try plugging the video cable directly into your computer and remove any docks, splitters, or adapters.

Why can't I get my display to run at 240Hz?

This usually happens if your cable, port, or graphics card does not support the full bandwidth. Make sure you are using a direct, high-quality DisplayPort or HDMI connection. If the option still is not there, set the display to 2560 x 1440 @ 60Hz first, then increase the refresh rate step by step.

I plugged my mouse and keyboard into the monitor USB ports, but my computer is not detecting them.

To use the monitor USB ports, you must connect an upstream cable, either USB Type-B or Type-C, from the monitor to your computer. Once connected, move the joystick to the right to open the KVM menu and select the port that matches your upstream cable.

My screen keeps flickering or shaking while I'm using it. What's wrong?

Flickering is often caused by a loose connection or a cable struggling to handle a high refresh rate. Push the video cable firmly into both the monitor and your computer. If it still flickers, lower your refresh rate to 60Hz to see if the issue stops, which usually means you need a better cable or a different port.

I plugged my headphones into the back of the monitor, but I'm not getting any sound.

Check that your active video cable actually carries an audio signal from your device, which HDMI and DisplayPort normally do. You should also verify that the monitor volume is turned up and that your computer or console has the monitor selected as its audio output device.

The picture looks way too dark. How do I make it brighter?

You can quickly adjust this by moving the joystick down to open the brightness shortcut. Turn the brightness up until it looks comfortable, and then adjust the contrast if needed. You can also try switching to a standard picture preset in the main menu.

I just turned the monitor on and noticed some dark or bright spots on the screen. Is the OLED panel defective?

Slight uneven brightness can be normal when the monitor is first powered on, especially if the room temperature has changed. Leave the display on for about 20 minutes to let it warm up, then check the screen again.

KTC OLED 27" 2K 240Hz/0.03ms USB-C Gaming Monitor | G27P6