UGREEN USB-C to DisplayPort Cable 8K – CM556

The UGREEN CM556 is a high-performance USB-C to DisplayPort cable that supports resolutions up to 8K at 60Hz and 4K at 144Hz. This 6-foot cable features gold-plated connectors and aluminum alloy housing, making it ideal for students connecting laptops to high-resolution monitors and business professionals requiring crisp visual quality for design work or multi-monitor setups. The direct cable connection eliminates the bulk of adapters while maintaining DisplayPort 1.4 specification performance.

Key Features & Benefits

• 8K Ultra HD Support: Transmits video at resolutions up to 7680×4320 at 60Hz, which means you can experience unprecedented detail for video editing, 3D modeling, or enjoying ultra-high-definition content on compatible 8K displays without compression or quality loss.
• High Refresh Rate Gaming: Supports 4K at 144Hz, 2K at 165Hz, and 1080p at 240Hz, so competitive gamers and content creators benefit from ultra-smooth motion during fast-paced gaming or when editing high-frame-rate video footage.
• HDR and Deep Color: Delivers HDR10 with 10-bit color depth (1.07 billion colors), providing enhanced contrast and color accuracy that makes professional photo editing, graphic design, and color-critical work more accurate compared to standard 8-bit displays.
• Universal USB-C Compatibility: Works with any laptop, tablet, or smartphone featuring USB-C ports with DisplayPort Alternate Mode including MacBook Pro/Air, iPad Pro, Dell XPS, Surface devices, and gaming laptops without requiring adapters or dongles.
• 6-Foot Length with Durable Build: Spans 1.8 meters (6 feet) with triple-braided nylon shielding and aluminum connector housings that resist wear during frequent connections while providing enough reach for comfortable desktop monitor placement without cable tension.

Technical Specifications

Cable Specifications

• Length: 1.8 meters (6 feet / 72 inches)
• Standard: DisplayPort 1.4 / HBR3 (High Bit Rate 3)
• Connector 1: USB-C (USB Type-C) male
• Connector 2: DisplayPort male (full-size, 20-pin)
• Bandwidth: Up to 32.4 Gbps (HBR3)
• Directionality: Unidirectional (USB-C source to DisplayPort display only)

Maximum Resolution Support

• 8K: 7680×4320 at 60Hz (with DSC – Display Stream Compression)
• 5K: 5120×2880 at 60Hz
• 4K: 3840×2160 at 144Hz (native, no compression)
• 2K/1440p: 2560×1440 at 165Hz
• 1080p: 1920×1080 at 240Hz

Advanced Video Features

• HDR Support: HDR10, HDR10+, Dolby Vision (display dependent)
• Color Depth: Up to 10-bit (1.07 billion colors)
• Chroma Subsampling: 4:4:4, 4:2:2, 4:2:0
• Dynamic Refresh: Supports AMD FreeSync and NVIDIA G-SYNC
• DSC: Display Stream Compression 1.2a for 8K support

Audio Specifications

• Audio Pass-through: Multi-channel uncompressed digital audio
• Supported Formats: PCM, Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master Audio
• Audio Channels: Up to 32 channels at 1536 kHz
• Sample Rate: Up to 1536 kHz

Physical Construction

• Cable Jacket: Triple-braided nylon with UV resistance
• Cable Diameter: 5.5mm (0.22 inches)
• Connector Housing: Aluminum alloy with anodized finish
• Contact Plating: 24K gold-plated pins for corrosion resistance
• Color: Black with gray aluminum shells

Durability Specifications

• Bend Cycle Rating: 10,000+ cycles
• Connector Insertion Life: 10,000+ plug/unplug cycles
• Strain Relief: Reinforced SR boots at both ends
• Shielding: Triple-layer (braided + aluminum foil + tinned copper)
• Temperature Range: -20°C to 75°C (-4°F to 167°F)

Compatibility Requirements

• Source Device: USB-C port with DisplayPort Alt Mode (DP Alt Mode)
• Display: DisplayPort input (full-size DP port)
• Operating Systems: Windows 11/10/8, macOS 10.15+, Linux, Chrome OS
• Note: Both source and display must support DP 1.4 for maximum resolution/refresh rates

Compatible Devices (Examples)

• Laptops: MacBook Pro/Air (2016+), Dell XPS 13/15/17, HP Spectre, Lenovo ThinkPad X1, Surface Laptop/Book
• Tablets: iPad Pro (2018+), Surface Pro
• Phones: Samsung Galaxy S/Note series (with DeX support)
• Graphics: Thunderbolt 3/4 docks, USB-C graphics adapters

Standards & Certifications

• VESA DisplayPort 1.4 Certified
• HDCP Support: HDCP 2.2 and 2.3 for protected content
• RoHS Compliant: Lead-free, environmentally friendly
• CE and FCC Certified: Safety and interference standards

Use Cases & Applications

For Students: Computer science and engineering students working with high-resolution CAD software, 3D modeling tools, or multiple virtual machines benefit from the CM556’s ability to drive 4K monitors at high refresh rates. Design students editing 4K video or working with large Photoshop files appreciate the bandwidth that prevents lag when moving windows or scrolling through timelines. Graduate students in data science or research can connect ultrawide 5K displays for viewing complex datasets, code, and documentation simultaneously.

For Professional Content Creation: Video editors working with 4K or 8K footage need displays that can accurately represent their content—the CM556’s support for 4K at 144Hz ensures smooth timeline scrubbing and playback without dropped frames. Photographers performing color-critical editing benefit from the HDR10 and 10-bit color support, which reveals subtle gradations in shadows and highlights that 8-bit displays miss. 3D artists and animators working in Blender, Maya, or Cinema 4D can preview renders at high resolutions without compression artifacts.

For Gaming Enthusiasts: Gamers with high-end laptops featuring discrete GPUs can connect to external gaming monitors supporting 1440p at 165Hz or 1080p at 240Hz for competitive advantages in fast-paced shooters or esports titles. The cable’s support for AMD FreeSync and NVIDIA G-SYNC eliminates screen tearing and stuttering for fluid gameplay. Laptop gamers appreciate the ability to transform portable systems into desktop-class gaming stations by connecting to full-size high-refresh displays.

For Business Productivity: Financial analysts, data scientists, and developers can connect USB-C laptops to 4K monitors for expanded workspace that displays spreadsheets, dashboards, and code with exceptional clarity. The 6-foot length accommodates typical desk setups where monitors sit on stands or arms at comfortable viewing distances. Remote workers using docking stations benefit from the cable’s reliability for daily monitor connections without the signal degradation common in adapter chains.

For Multi-Monitor Workstations: Professionals building multi-display setups can use the CM556 to connect USB-C docks or Thunderbolt hubs to DisplayPort monitors, creating seamless arrays of high-resolution displays. Traders monitoring multiple market feeds, system administrators watching server dashboards, or creative professionals managing complex workflows benefit from the bandwidth that supports multiple 4K displays through daisy-chaining or hub configurations.

For Presentations & Conferences: Business travelers can connect their USB-C laptops to conference room DisplayPort monitors or projectors that support 4K resolution, ensuring presentations display with maximum clarity. The durable braided construction withstands frequent packing and unpacking in laptop bags without developing the signal issues common in cheaper cables.

For Home Entertainment: Users connecting USB-C laptops or tablets to 4K or 8K TVs with DisplayPort inputs can enjoy streaming content, gaming, or media playback at full resolution with HDR enhancement. The audio pass-through eliminates the need for separate audio connections when the display has built-in speakers or audio extraction.

The UGREEN CM556 represents a premium solution for high-performance display connectivity from USB-C devices. However, achieving maximum specifications requires both your source device and display to support the desired resolution and refresh rate combination. For instance, 8K at 60Hz requires a DisplayPort 1.4 display with DSC support and a USB-C source capable of driving 8K—most current laptops max out at 4K or 5K output even with DP 1.4 support.

Verify your laptop’s USB-C port supports DisplayPort Alternate Mode and check the manufacturer’s specifications for maximum supported resolution and refresh rate—some USB-C ports are limited to 4K at 60Hz despite using DP Alt Mode. Gaming laptops typically support higher refresh rates at lower resolutions, while professional workstations prioritize maximum resolution over refresh rate.

The 6-foot length works well for most desktop configurations but measure your specific setup if your monitor sits far from your laptop or docking station—DisplayPort signals can travel longer distances than HDMI without degradation, but unnecessarily long cables introduce potential points of failure. The unidirectional design means this cable only works from USB-C sources to DisplayPort displays, not the reverse—you cannot connect a DisplayPort computer to a USB-C monitor with this cable.

For laptops with limited USB-C ports, consider whether dedicating a port to display output affects your ability to connect other peripherals or maintain charging—Thunderbolt docks can provide multiple DisplayPort outputs while preserving other connectivity options. The triple-braided nylon construction adds durability but reduces flexibility compared to rubber-jacketed cables, which may affect routing through tight cable management channels.

When connecting to gaming monitors, ensure both your laptop’s GPU and the display support the same adaptive sync technology (FreeSync or G-SYNC) for optimal performance. The cable supports both technologies, but compatibility depends on your hardware. For professional color work, remember that cable quality alone doesn’t guarantee color accuracy—proper monitor calibration remains essential regardless of connection type.