1. Introduction
The UGREEN Bidirectional USB C to DisplayPort 1.4 Cable (Model CM556) is designed to provide high-resolution video and audio transmission between USB-C enabled devices and DisplayPort displays. This cable supports resolutions up to 8K at 60Hz and 4K at 240Hz/144Hz, offering a versatile solution for various display needs, including gaming, professional workstations, and home entertainment. Its bidirectional functionality allows for flexible connection options, supporting both USB-C to DisplayPort and DisplayPort to USB-C signal flow.
Image: UGREEN USB C to DisplayPort 1.4 Cable connected to a laptop, showcasing its sleek design.
2. Specifications
| Feature | Description |
|---|---|
| Model Number | CM556 |
| Version | DisplayPort 1.4 |
| Connector A | Type-C (Male) |
| Connector B | DisplayPort (Male) |
| Transmission | Bidirectional |
| Max Resolution | 8K@60Hz, 4K@240Hz/144Hz, 2K@240Hz |
| Bandwidth | DP1.4: 32.4Gbps (50% faster than DP1.2) |
| Supported Technologies | G-SYNC, FreeSync, ALLM, HDCP2.3, 3D, HDR, VRR, Dolby |
| Cable Material | Nylon Braided |
| Connector Casing | Aluminum Alloy |
| Certification | CE, RoHS |
| Feature | USB 3.0 |
Image: Comparison of DP1.4 (32.4Gbps) and DP1.2 (21.6Gbps) bandwidth for 8K UHD resolution.
3. Setup and Installation
The UGREEN Bidirectional USB C to DisplayPort 1.4 Cable offers plug-and-play functionality. No drivers are typically required for basic operation.
3.1 Connecting USB-C Source to DisplayPort Display
- Ensure your USB-C source device (e.g., laptop, tablet, phone) supports DisplayPort Alternate Mode (Alt Mode) over its USB-C port.
- Connect the USB-C end of the cable to the USB-C port on your source device.
- Connect the DisplayPort end of the cable to the DisplayPort input on your monitor, TV, or projector.
- Select the correct DisplayPort input on your display device.
3.2 Connecting DisplayPort Source to USB-C Display
- Ensure your USB-C display (e.g., monitor) supports video input via its USB-C port.
- Connect the DisplayPort end of the cable to the DisplayPort output on your source device (e.g., DP-PC, laptop).
- Connect the USB-C end of the cable to the USB-C input on your display.
- Select the correct USB-C input on your display device.
Image: Diagram illustrating bidirectional transmission from USB-C devices to DP monitors and DP PCs to USB-C monitors.
Image: Chart detailing universal compatibility with various input devices (laptops, phones, tablets), output devices (monitors, HDTVs, projectors), and operating systems (Windows, macOS, Linux, iOS).
4. Operating Instructions
4.1 Display Modes
Once connected, your operating system should automatically detect the external display. You can configure the display mode through your device's display settings:
- Mirror Mode: Duplicates your primary screen onto the external display.
- Expanded Mode: Extends your desktop across multiple screens, providing more workspace.
- MST Daisy Chain Mode: Allows connecting multiple DisplayPort monitors in a series from a single DisplayPort output (requires MST-compatible devices and monitors).
- Clamshell Mode: For laptops, allows using external displays with the laptop lid closed (requires external power and peripherals).
Image: Visual representation of different display modes: Mirror, Expanded, MST Daisy Chain, and Clamshell.
4.2 Resolution and Refresh Rate
The cable supports high resolutions and refresh rates. To achieve the desired output (e.g., 8K@60Hz or 4K@240Hz), ensure both your source device and display device support these specifications. Adjust the resolution and refresh rate settings in your operating system's display preferences.
Image: A gaming scenario demonstrating smooth gameplay on a larger screen at 4K@240Hz/144Hz.
4.3 Audio Transmission
The cable transmits both video and audio signals. Ensure your display device's audio output is selected as the default playback device in your operating system's sound settings if you wish to use the display's speakers or connected audio devices.
Image: Explanation of Dynamic HDR for brighter colors and higher contrast, improving image quality for a realistic experience.
5. Maintenance
To ensure the longevity and optimal performance of your UGREEN DisplayPort cable, follow these maintenance guidelines:
- Cleaning: Gently wipe the cable and connectors with a dry, soft cloth to remove dust and debris. Avoid using liquid cleaners directly on the connectors.
- Storage: Store the cable in a cool, dry place away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable or placing heavy objects on it.
- Handling: Always grasp the connector ends when plugging or unplugging the cable. Avoid pulling on the cable itself, as this can damage the internal wires or connectors.
- Avoid Kinks: Do not bend the cable sharply or create tight kinks, as this can damage the internal conductors and shielding.
Image: Detailed view of the cable's robust construction, featuring an aluminum alloy case, nylon braiding, and durable connectors.
6. Troubleshooting
6.1 No Display/Signal
- Check Connections: Ensure both the USB-C and DisplayPort connectors are fully and securely plugged into their respective ports.
- Source Device Compatibility: Verify that your USB-C source device supports DisplayPort Alternate Mode (Alt Mode) for video output. Not all USB-C ports support video.
- Display Input Selection: Make sure your monitor/TV is set to the correct DisplayPort or USB-C input source.
- Try Another Port/Cable: If possible, test with a different USB-C port on your source device or another DisplayPort input on your display. If you have another cable, try that to rule out cable issues.
- Restart Devices: Sometimes, a simple restart of both the source and display devices can resolve connection issues.
6.2 Flickering or Unstable Display
- Reduce Resolution/Refresh Rate: If you are using very high resolutions (e.g., 8K) or refresh rates (e.g., 240Hz), try lowering them in your device's display settings to see if stability improves.
- Cable Integrity: Inspect the cable for any visible damage, kinks, or frayed areas. A damaged cable can cause signal instability.
- Driver Updates: Ensure your graphics drivers on your source device are up to date.
6.3 No Audio
- Check Sound Settings: In your operating system's sound settings, ensure the connected display (e.g., 'DisplayPort Audio' or the monitor's name) is selected as the default playback device.
- Display Volume: Check the volume settings on your monitor or TV.
- Cable Connection: Re-seat the cable firmly at both ends.
7. User Tips
- Verify USB-C Port Capability: Always confirm that your device's USB-C port supports DisplayPort Alternate Mode (Alt Mode) for video output. Not all USB-C ports are created equal.
- Optimal Performance: For the best experience with 8K@60Hz or 4K@240Hz, ensure your source device, display, and any intermediate adapters are all rated for DisplayPort 1.4 and the desired resolution/refresh rate.
- Gaming Setup: This cable is excellent for connecting devices like the Steam Deck or gaming laptops to high-refresh-rate monitors for a smoother gaming experience.
- Multi-Monitor Setups: Utilize the MST Daisy Chain mode for efficient multi-monitor configurations, if supported by your devices.
8. Warranty and Support
UGREEN products are backed by a manufacturer's warranty. For detailed warranty information, product support, or technical assistance, please visit the official UGREEN website or contact their customer service directly. Keep your purchase receipt for warranty claims.