1. Introduction
This manual provides essential information for the setup, operation, and maintenance of your ASUS ROG Strix XG27ACMG 27-inch 1440P USB-C HDR Gaming Monitor. Designed for professional gamers, this monitor delivers smooth, lifelike visuals with a 1440p resolution, 270Hz (OC) refresh rate, and a rapid 1ms response time. It incorporates AI-powered features and versatile connectivity options, including USB Type-C.

Figure 1.1: Front view of the ASUS ROG Strix XG27ACMG monitor.
Key Features:
- 27-inch 2560 x 1440 HDR display with an ultrafast 270Hz (overclocked) refresh rate.
- ASUS Fast IPS technology for 1ms (GTG) response time.
- ASUS Extreme Low Motion Blur Sync (ELMB SYNC) for clear visuals without ghosting or tearing.
- 95% DCI-P3 color gamut with advanced gray-scale tracking for smooth color gradation.
- DisplayWidget Center for easy monitor settings adjustments via mouse.
- USB Type-C with DisplayPort Alt mode for simplified connectivity.
- ROG Gaming A.I. technology with AI-powered features for enhanced gaming.
2. Setup Guide
2.1 Unboxing and Package Contents
Carefully remove all components from the packaging. Ensure all items listed below are present.

Figure 2.1: Included accessories and monitor components.
Package Contents:
- XG27ACMG Gaming Monitor
- DisplayPort cable
- Power cord
- Quick start guide
- ROG pouch
- ROG sticker
- Warranty Card
2.2 Monitor Assembly
Follow these steps to assemble the monitor stand and attach it to the display panel. Ensure the monitor is placed on a soft, flat surface during assembly to prevent scratches.
- Attach the stand base to the stand neck and secure it with the captive screw.
- Align the assembled stand with the mounting holes on the back of the monitor panel.
- Gently push the stand into place until it clicks securely.

Figure 2.2: Ergonomic design allows for tilt, swivel, pivot, and height adjustments.
2.3 Connecting the Monitor
Connect the monitor to your computer or other devices using the appropriate cables. Ensure all connections are secure before powering on.

Figure 2.3: Versatile connectivity options including Type-C, DisplayPort 1.4, and HDMI.
Connection Steps:
- Power Connection: Connect the power cord to the monitor's power input and then to a power outlet.
- Video Input:
- For optimal performance, connect the included DisplayPort cable from your computer's graphics card to the monitor's DisplayPort input.
- Alternatively, use an HDMI cable for HDMI input.
- For USB-C compatible devices, connect a USB-C cable to the monitor's USB Type-C port. This port supports DisplayPort Alt mode and power delivery.
- USB Hub (Optional): Connect the USB upstream cable from your computer to the monitor's USB upstream port to enable the monitor's USB downstream ports.
- Audio (Optional): If desired, connect external speakers or headphones to the monitor's audio output jack.
3. Operating Instructions
3.1 Powering On/Off
Press the power button located on the monitor to turn it on or off. The power indicator light will illuminate when the monitor is active.
3.2 On-Screen Display (OSD) Menu Navigation
The monitor features an intuitive OSD menu for adjusting various settings. Use the joystick control located on the back or bottom of the monitor to navigate the menu:
- Push: Press the joystick to enter the OSD menu or confirm a selection.
- Up/Down: Move the joystick up or down to scroll through menu options.
- Left/Right: Move the joystick left or right to adjust values or navigate sub-menus.
3.3 DisplayWidget Center Software
The ASUS DisplayWidget Center software allows for convenient adjustment of monitor settings directly from your computer using a mouse. This eliminates the need to use the physical OSD buttons for many common adjustments.

Figure 3.1: Adjusting monitor settings effortlessly through the DisplayWidget Center software.
3.4 Display Settings
Refresh Rate and Response Time:
The monitor supports up to a 270Hz (overclocked) refresh rate and a 1ms (GTG) response time. These settings are crucial for fluid motion in fast-paced gaming. Ensure your graphics card and connection type support these rates. Adjustments can typically be made in your operating system's display settings or through the monitor's OSD.
G-SYNC Compatibility:
This monitor is G-SYNC Compatible, which synchronizes the monitor's refresh rate with your NVIDIA GPU's frame rate to eliminate screen tearing and minimize stuttering. Enable G-SYNC in the NVIDIA Control Panel after connecting via DisplayPort.
Extreme Low Motion Blur Sync (ELMB SYNC):
ELMB SYNC technology works in conjunction with variable refresh rate (VRR) to further reduce motion blur and ghosting, providing sharp visuals even during intense action. This feature can be enabled via the OSD menu.
Color Settings and HDR:
The monitor offers a wide color gamut (95% DCI-P3) and supports HDR for vibrant and accurate colors. You can fine-tune color settings, including brightness, contrast, and color temperature, through the OSD or DisplayWidget Center. HDR can be enabled in your operating system's display settings.

Figure 3.2: Experience vivid colors and smoother color gradation with DCI-P3 95% and sRGB 125% coverage.
3.5 ROG Gaming A.I. Features
The monitor includes AI-powered features designed to enhance your gaming experience:
- Dynamic Crosshair: Provides an on-screen crosshair that adapts to the game environment for improved aiming.
- Dynamic Shadow Boost: Automatically brightens dark areas of the game world without overexposing bright areas, helping you spot hidden enemies.

Figure 3.3: Visual representation of AI-powered Dynamic Crosshair and Dynamic Shadow Boost in action.
4. Maintenance
4.1 Cleaning the Monitor
To maintain optimal display quality and extend the life of your monitor, follow these cleaning guidelines:
- Always power off the monitor and unplug the power cord before cleaning.
- Use a soft, lint-free cloth slightly dampened with water or a specialized screen cleaning solution.
- Gently wipe the screen surface. Avoid applying excessive pressure.
- For the monitor casing, use a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents.
- Never spray liquid directly onto the screen or into any openings on the monitor.
4.2 Proper Handling and Storage
- Avoid placing heavy objects on the monitor or its cables.
- Do not expose the monitor to extreme temperatures, humidity, or direct sunlight.
- When moving the monitor, hold it by the stand or base, not by the screen.
- If storing the monitor for an extended period, use its original packaging to protect it from dust and damage.
5. Troubleshooting
This section addresses common issues you might encounter with your monitor. If the problem persists after attempting these solutions, please contact ASUS support.
| Problem | Possible Solution |
|---|---|
| No image on screen |
|
| Image is blurry or distorted |
|
| Screen flickering |
|
| G-SYNC not working |
|
| Colors appear incorrect |
|
6. Technical Specifications
Below are the key technical specifications for the ASUS ROG Strix XG27ACMG monitor:
| Feature | Specification |
|---|---|
| Screen Size | 27 Inches |
| Screen Resolution | 2560 x 1440 Pixels (QHD Wide 1440p) |
| Max Refresh Rate | 270Hz (Overclocked) |
| Response Time | 1ms (GTG) |
| Panel Type | Fast IPS |
| HDR Support | Yes |
| G-SYNC Compatibility | Yes |
| Color Gamut | 95% DCI-P3 |
| Connectivity | DisplayPort 1.4, HDMI, USB Type-C (with DP Alt mode) |
| Ergonomics | Tilt, Swivel, Pivot, Height Adjustment |
| Dimensions (LxWxH) | 8.6 x 24.2 x 20.1 inches |
| Weight | 14.3 pounds |
7. Warranty and Support
7.1 Product Warranty
The ASUS ROG Strix XG27ACMG monitor comes with a 3-year limited warranty. This warranty covers defects in materials and workmanship under normal use. Please refer to the included Warranty Card for detailed terms and conditions, including coverage specifics and exclusions.
7.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact ASUS customer support. You can find contact information and additional resources on the official ASUS website:
- ASUS Support Website: https://www.asus.com/support/
- Refer to the Quick Start Guide or Warranty Card for regional contact numbers and service centers.





