GIGABYTE M28U 28" 144Hz Gaming Monitor Instruction Manual

Important Safety Information

Please read this manual thoroughly before operating your GIGABYTE M28U monitor. Keep this manual for future reference. Always follow basic safety precautions to reduce the risk of fire, electric shock, and injury to persons.

• Do not expose the monitor to rain or moisture.
• Do not open the monitor casing. There are no user-serviceable parts inside.
• Use only the power adapter and cables provided by GIGABYTE.
• Ensure proper ventilation around the monitor.
• Clean the monitor with a soft, dry cloth. Avoid liquid cleaners.

Package Contents

Verify that all items listed below are included in your monitor package:

• GIGABYTE M28U Monitor
• Power cable
• HDMI cable
• DisplayPort (DP) cable
• USB cable
• Quick Start Guide (QSG)
• Warranty card

If any items are missing or damaged, please contact your retailer or GIGABYTE customer support.

Product Overview

The GIGABYTE M28U is a high-performance 28-inch gaming monitor designed for an immersive visual experience. It features a 3840x2160 (4K UHD) SS IPS display with a rapid 144Hz refresh rate and a 1ms (GTG) response time, ensuring smooth and fluid gameplay. With AMD FreeSync Premium Pro, VESA Display HDR400, and 94% DCI-P3 color gamut, this monitor delivers vibrant colors and excellent contrast.

Figure 1: Front view of the GIGABYTE M28U 28" 144Hz Gaming Monitor.

Figure 2: Physical dimensions of the GIGABYTE M28U monitor.

Setup

1. Assembling the Stand

To attach the stand to your monitor:

1. Carefully place the monitor face down on a soft, clean surface to prevent scratches.
2. Align the stand neck with the mounting slot on the back of the monitor.
3. Secure the stand neck to the monitor using the provided screws.
4. Attach the base to the stand neck and tighten the thumb screw.

Alternatively, the monitor supports VESA 100x100mm mounting for compatible monitor arms or wall mounts.

Figure 3: Illustration of the adjustable stand and VESA mounting points.

2. Connecting the Monitor

Connect your devices to the monitor using the appropriate cables:

• DisplayPort 1.4: For connecting to a PC graphics card.
• HDMI 2.1: Two ports available for connecting gaming consoles (e.g., PS5, Xbox Series X) or other HDMI-enabled devices.
• USB Type-C: Supports DisplayPort Alternate Mode, 15W power delivery, and data transfer, enabling KVM functionality.
• USB 3.0 Upstream: Connects to your PC to enable the USB 3.0 Downstream ports and OSD Sidekick software.
• USB 3.0 Downstream: Three ports for connecting peripherals like keyboards, mice, or other USB devices.
• Earphone Jack: For connecting headphones or external speakers.

Figure 4: Diagram showing the input/output ports on the GIGABYTE M28U monitor.

3. Powering On

Connect the power cable to the monitor and a power outlet. Press the power button (usually located on the back or bottom of the monitor) to turn on the display.

Operating the Monitor

1. OSD Menu Navigation

The On-Screen Display (OSD) menu allows you to adjust various monitor settings. Use the joystick controller, typically located on the back of the monitor, to navigate the menu:

• Push: Enter/Confirm selection.
• Up/Down: Navigate through menu options.
• Left/Right: Adjust values or move between sub-menus.

2. OSD Sidekick Software

For PC users, the GIGABYTE OSD Sidekick software provides a convenient way to adjust monitor settings directly from your desktop using a keyboard and mouse. Ensure the USB Upstream cable is connected from your monitor to your PC for this feature to function.

Figure 5: Screenshot of the GIGABYTE OSD Sidekick software interface for monitor settings.

3. KVM Feature

The built-in KVM (Keyboard, Video, Mouse) switch allows you to control multiple devices (e.g., a desktop PC and a laptop) using a single set of keyboard, mouse, and monitor. Connect your devices to the monitor's USB-C and other video inputs (HDMI/DP), and the USB Upstream port to your main PC. Use the dedicated KVM button on the monitor to switch between connected devices.

Figure 6: Example setup demonstrating the Type-C KVM functionality with a laptop and desktop PC.

Figure 7: Diagram illustrating the KVM feature, allowing control of multiple devices with one set of peripherals.

4. Gaming Features

• 144Hz Refresh Rate & 1ms (GTG) Response Time: Experience ultra-smooth motion and minimal input lag for competitive gaming.


Figure 8: Visual comparison highlighting the 1ms response time and 144Hz refresh rate benefits.

• AMD FreeSync Premium Pro: Synchronizes the monitor's refresh rate with your GPU's frame rate to eliminate screen tearing and stuttering.
• VESA Display HDR400: Provides enhanced contrast and color accuracy for a more dynamic visual experience.
• Black Equalizer: Enhances visibility in dark areas of the game without overexposing bright areas, giving you an advantage in dimly lit scenes.


Figure 9: Comparison showing the effect of the Black Equalizer feature on image visibility in dark scenes.

5. Adjusting the Stand

The ergonomic stand allows for flexible adjustments to optimize your viewing comfort:

• Height Adjustment: Raise or lower the monitor to your preferred eye level.
• Tilt Adjustment: Tilt the screen forward or backward to reduce glare and improve viewing angle.

Figure 10: Diagram illustrating the ergonomic adjustments available with the monitor stand.

Maintenance

Proper maintenance ensures the longevity and optimal performance of your monitor:

• Cleaning the Screen: Gently wipe the screen with a soft, lint-free cloth. For stubborn smudges, lightly dampen the cloth with water or a specialized screen cleaner (avoid ammonia-based cleaners).
• Cleaning the Exterior: Use a soft, dry cloth to wipe the monitor casing and stand.
• Avoid Harsh Chemicals: Do not use alcohol, benzene, thinner, or any abrasive cleaners, as these can damage the monitor's surface.
• Power Off When Not in Use: Turn off the monitor when not in use for extended periods to conserve energy and prolong its lifespan.

Troubleshooting

If you encounter issues with your GIGABYTE M28U monitor, refer to the following common troubleshooting steps:

• No Display/Power: Ensure all power cables are securely connected to the monitor and a working power outlet. Check if the power indicator light is on. Try a different power outlet.
• No Signal: Verify that the video cable (HDMI, DisplayPort, USB-C) is correctly connected to both the monitor and your source device (PC, console). Ensure the correct input source is selected in the OSD menu.
• Image Quality Issues (Blurry, Distorted, Incorrect Colors): Check the display resolution and refresh rate settings on your source device to ensure they match the monitor's native resolution (3840x2160) and desired refresh rate (up to 144Hz). Adjust settings in the OSD menu or OSD Sidekick software.
• Flickering/Black Screens: Ensure your graphics drivers are up to date. Try a different video cable. If using HDMI 2.1 with a PS5, be aware of potential compatibility nuances with DSC 1.2a.
• Dead Pixels: While rare, a small number of non-functioning pixels may be inherent to LCD technology. Refer to GIGABYTE's pixel policy for warranty information.
• Firmware Update: GIGABYTE may release firmware updates to improve performance or fix issues. Check the official GIGABYTE website for the latest firmware and instructions on how to update using the OSD Sidekick software.

If the problem persists after trying these steps, please contact GIGABYTE customer support.

Specifications

Warranty and Support

Your GIGABYTE M28U monitor comes with a manufacturer's warranty. Please refer to the included warranty card for detailed terms and conditions, including coverage period and service procedures.

For technical support, driver downloads, firmware updates, or further assistance, please visit the official GIGABYTE website or contact their customer service department. Keep your product's serial number and proof of purchase handy when seeking support.