UGREEN 8K HDMI 2.1 Cable (Model 25910) Instruction Manual

1. Introduction

This manual provides detailed instructions for the UGREEN 8K HDMI 2.1 Cable, Model 25910. This cable is designed to facilitate high-bandwidth audio and video transmission between compatible devices, supporting advanced resolutions and features. Please read this manual thoroughly before use to ensure proper setup and operation.

Figure 1: UGREEN 8K HDMI 2.1 Cable

2. Key Features

• HDMI 2.1 Certified: Ensures compliance with the latest HDMI 2.1 specifications for reliable performance.
• High Resolution Support: Delivers 8K@60Hz, 4K@240Hz, and 10K resolutions for enhanced image clarity.
• Ultra High Speed 48Gbps: Provides uncompressed bandwidth for high-speed data transmission without signal loss.
• Dynamic HDR: Supports Dynamic HDR for improved color accuracy and contrast, resulting in more realistic visuals.
• Enhanced Audio Return Channel (eARC): Enables direct transmission of full-resolution audio formats like Dolby Atmos and DTS:X from your TV to a soundbar or AV receiver.
• Gaming Features: Supports Variable Refresh Rate (VRR), Quick Media Switching (QMS), Quick Frame Transport (QFT), and Auto Low Latency Mode (ALLM) for a smoother gaming experience.
• Durable Construction: Features an aluminum alloy case, nickel-plated connectors, and a braided nylon jacket for enhanced durability and flexibility.

Figure 2: HDMI 2.1 Certification details

Figure 3: Visual comparison of 8K@60Hz and 4K@240Hz performance

Figure 4: Cable designed for gaming with VRR, QMS, QFT, and ALLM

Figure 5: Dynamic HDR for improved detail and color vibrancy

3. Package Contents

• 1 x UGREEN 8K HDMI 2.1 Cable (6.6FT)

4. Setup Instructions

Follow these steps to connect your UGREEN 8K HDMI 2.1 Cable:

1. Ensure all devices (e.g., TV, gaming console, PC, Blu-ray player) are powered off before making connections.
2. Locate the HDMI output port on your source device (e.g., gaming console, PC).
3. Insert one end of the UGREEN HDMI 2.1 cable firmly into the HDMI output port of your source device.
4. Locate an available HDMI input port on your display device (e.g., TV, monitor, projector). For optimal performance, use an HDMI 2.1 compatible port, often labeled 'eARC' or indicating high refresh rates.
5. Insert the other end of the UGREEN HDMI 2.1 cable firmly into the HDMI input port of your display device.
6. Power on your display device, then your source device.
7. Select the correct HDMI input on your display device using its remote control or on-screen menu.
8. Verify that the audio and video signals are being transmitted correctly.

Figure 6: Example of connecting input and output devices

5. Operating Instructions

The UGREEN 8K HDMI 2.1 Cable supports various display modes and advanced features:

Display Modes:

• Mirror Mode: Duplicates the content from your source device onto the display.
• Extended Mode: Extends your desktop across multiple displays, allowing for more workspace.
• Game Mode: Optimizes display settings for gaming, often utilizing features like VRR and ALLM for reduced latency and smoother visuals.

Figure 7: Illustration of Mirror, Extended, and Game display modes

Advanced Features:

• Dynamic HDR: Automatically adjusts brightness, contrast, and color on a scene-by-scene or even frame-by-frame basis for a more vivid and detailed picture. Ensure your display and source device support Dynamic HDR for this feature to function.
• eARC: For enhanced audio, connect the cable to the HDMI port labeled 'eARC' on your TV and your AV receiver/soundbar. This allows for high-bitrate audio formats to be passed through.
• VRR/ALLM: These features are automatically enabled when supported by your gaming console and display, reducing screen tearing and input lag for a more responsive gaming experience.

6. Care and Maintenance

• Storage: Store the cable in a cool, dry place away from direct sunlight and extreme temperatures.
• Cleaning: Use a soft, dry cloth to clean the cable and connectors. Avoid using liquid cleaners or solvents.
• Handling: Avoid sharp bends or kinks in the cable, as this can damage the internal wiring. Do not pull on the cable by the cord; always grasp the connector when plugging or unplugging.
• Protection: The braided nylon jacket provides durability, but avoid exposing the cable to excessive force or abrasive surfaces.

Figure 8: Internal construction showing pure copper core, nickel-plated connector, aluminum alloy shell, and braided cotton mesh.

7. Troubleshooting

If you encounter issues with your UGREEN 8K HDMI 2.1 Cable, refer to the following common solutions:

• No Picture/Signal:
  • Ensure both ends of the cable are securely connected to the correct ports.
  • Verify that your display device is set to the correct HDMI input source.
  • Test the cable with another device or a different HDMI port if available.
  • Check if your source and display devices are powered on.
• Poor Picture Quality (Flickering, Artifacts, No 8K/4K):
  • Ensure both your source and display devices support the desired resolution and refresh rate (e.g., 8K@60Hz, 4K@240Hz).
  • Check the display settings on your source device to ensure it's outputting the correct resolution and refresh rate.
  • Confirm that the HDMI port on your display device is HDMI 2.1 compatible.
  • Reduce the cable length if possible, although this cable is designed for reliable transmission at its specified length.
• No Audio:
  • Verify that the audio output settings on your source device are configured correctly.
  • Ensure your display or audio receiver is not muted and the volume is turned up.
  • If using eARC, ensure both devices support eARC and it is enabled in their settings.

8. Technical Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the official UGREEN website or contact UGREEN customer service directly. Keep your purchase receipt for warranty claims.