UGREEN CM478 5-in-1 USB-C Docking Station – 4K HDMI, USB 3.0, 2×USB 2.0 & 100W PD – Space Gray

Expand the connectivity of your USB-C laptop, tablet or compatible device with the UGREEN CM478 5-in-1 USB-C Docking Station. Designed for modern devices with limited ports, it combines 4K HDMI output, one high-speed USB 3.0 port, two USB 2.0 ports and 100W USB-C Power Delivery pass-through in a compact Space Gray aluminium housing.

The CM478 gives you the ports needed for a practical workstation without the size and complexity of a full desktop docking station. Connect an external monitor or TV, transfer files through USB 3.0, keep your keyboard and mouse connected through USB 2.0, and charge your compatible laptop through the USB-C PD port—all from one USB-C connection.

Key Features

4K HDMI Display Output

Connect your laptop to a compatible monitor, TV or projector through the HDMI port with support for resolutions up to 4K UHD at 30Hz.

This makes the CM478 useful for extending your desktop, presentations, office productivity, streaming and working with a larger external display.

100W USB-C Power Delivery Pass-Through

The USB-C PD port supports up to 100W pass-through charging, allowing you to power a compatible USB-C laptop while using the dock's other ports.

This is particularly useful for laptops with only a few USB-C ports because you don't have to sacrifice your charging connection when adding an external display and USB peripherals.

Important: the 100W specification refers to the maximum PD input/pass-through capability of the dock. Actual power delivered to your laptop depends on the charger, cable and laptop's own charging requirements.

USB 3.0 up to 5Gbps

The dedicated USB-A 3.0 port provides data transfer speeds of up to 5Gbps, making it the preferred port for high-speed devices such as USB flash drives, external SSDs and hard drives.

Two USB 2.0 Ports for Everyday Peripherals

Two additional USB-A 2.0 ports provide up to 480Mbps and are ideal for devices that don't require high-speed data transfer.

Connect peripherals such as:

• Keyboard
  
• Mouse
  
• Printer
  
• Webcam
  
• Wireless receiver
  
• Game controller
  
• Other everyday USB accessories
  

This leaves the USB 3.0 port available for devices where faster data transfer actually matters.

Five Essential Connections from One USB-C Port

The CM478 combines:

• 1 × HDMI
  
• 1 × USB-A 3.0
  
• 2 × USB-A 2.0
  
• 1 × USB-C PD
  

This gives you a useful balance between display output, high-speed data, everyday peripherals and laptop charging.

Compact Aluminium Design

The compact aluminium-alloy housing makes the CM478 easy to carry alongside a laptop while helping with heat dissipation during use. Published specifications put the adapter at approximately 120 × 28 × 12mm and around 91g.

Plug & Play Connectivity

The CM478 is designed for straightforward use without requiring separate driver installation on supported systems. Connect the integrated USB-C cable to your compatible device and connect your peripherals.

Turn Your Laptop into a More Complete Workstation

The UGREEN CM478 is particularly useful for laptops that have moved toward USB-C connectivity but still need traditional USB-A peripherals.

For example, you can connect an external 4K monitor through HDMI, an external SSD through the USB 3.0 port, a keyboard and mouse through the two USB 2.0 ports, while simultaneously charging the laptop through USB-C PD.

That makes it a practical choice for home offices, business users, students, remote workers and professionals who frequently move between workstations.
Important Compatibility Note

For the HDMI output to work, the host device's USB-C port must support video output/DisplayPort Alt Mode. A USB-C port that supports data and charging only will not provide video through the CM478.

Also, 4K @ 30Hz is the maximum HDMI specification. Actual resolution and refresh rate depend on the laptop, display and HDMI cable being used.

The USB-C PD port is for charging pass-through rather than data or video.

Why Buy the UGREEN CM478?

• 4K HDMI output — Connect an external monitor, TV or projector.
  
• 100W PD pass-through — Keep a compatible USB-C laptop charged while using the dock.
  
• 5Gbps USB 3.0 — Ideal for external storage and fast file transfers.
  
• 2 × USB 2.0 — Connect keyboards, mice and other everyday peripherals.
  
• 5-in-1 connectivity — Essential ports combined in one compact adapter.
  
• Aluminium construction — Durable, lightweight and portable.
  
• Compact design — Easy to carry with a laptop.
  
• Plug and play — Simple connectivity without complicated setup.