UGREEN CM555 User manual

USB-C Multifunction Docking Station Pro
Model: CM555 | P/N: 90325
The Adopted Trademarks HDMI, and the HDMI Logo are trademarks or registered
trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.

Front View: Back View:
々2
3.5mm Jack
Earphone & Mic Combo
Power Button
LED Indicator
SD Card
TF Card
USB Flash
Drive
々2
USB-A
々2
USB-C
Portable
Hard Drive
々2
Mouse Keyboard
Charger
Projector Monitor
Monitor
Projector
USB-C PD Port
Laptop
々3
HDMI
Ethernet Port
USB-A
々3
DP
々2
Internet
々2
々2
1×USB-C Multifunction Docking Station Pro
1×USB-C Cable 1m
1×CD Driver
1×User Manual
Package Contents
Connection
⸺ 1 ⸺

Setup
2. Connect your laptop to the USB-C port < > of the dock with the included USB-C cable.
3. Connect your peripherals to your laptop, however when connecting to high-power devices, please connect an external power supply to the PD
port < > to ensure stable data transmission.
Note: If you have any problems during the driver installation, please feel free to contact us through Amazon.
Note: Short press the power button to turn off the dock, at this point, other ports will stop working, however, the PD port < > will still provide
power to your laptop.
OS Compatibility (Partial)
Supported Operating Systems
Windows
macOS
Unsupported Operating Systems
Windows 11 Windows 2000 (SP1 to SP4) or earlier Windows OSes
Windows 10 Windows 2003 Server
macOS Monterey (version 12) 13-inch MacBook Pro with M2 Chip
macOS Big Sur (version 11) ⸺
� �� � � �
Please refer to the [OS Compatibility] or confirm it with our customer service.
1. Please install the DisplayLink driver first before connecting the dock to your laptop. There are several ways to download it:
(1) Check your system edition, then install or update the corresponding driver from: https://www.mediafire.com/file/ep4rdl5ztg7912h/90325.rar/file
(2) CD driver
⸺ 2 ⸺

Resolution Setting for Windows 10 & macOS
① Duplicate Mode ② Extend Mode
Notes: Not support the "ABBB" or "AAAA" display mode.
PC screen only
PROJECT
Duplicate
Extend
Second screen only
10:29 AM
B
A
C D
Apple Icon > "System Preferences" > "Displays"
Right Click Desktop > "Display Setting"
Graphics Settings for Windows 10
Click the" " + " P " simultaneously to select the display mode.
Source Device
HDMI 1
Display HDMI 2 Display DP Display
A
A
B B
Source Device
HDMI 1
Display HDMI 2 Display DP Display
Option 1
BB C
HDMI 1
Display HDMI 2 Display DP Display
Option 2
⸺ 3 ⸺

Graphics Settings for macOS
1. Why do I have no display when connecting to the HDMI/DP port?
Display Issues
1) Check which video port is not outputting the image.
If it is HDMI 8K, please check whether your laptop's USB-C port supports video output.
If it is HDMI 4K/DP port, please check whether the driver has been installed.
2) Please make sure the HDMI or DP cable meet the requirements and the connection between the devices is solid.
3) Adjust the display resolution, as the monitor may support lower resolutions than what the dock can support.
4) Ensure to select the correct input signal source on your monitor, as some devices need to manually adjust.
5) Restart your computers.
6) Try another monitor to check whether the display is normal.
Mirror Mode
Click the Apple Icon " " > "System Preferences"＞"Displays" >
check the "Mirror Displays" option
FAQ
A
A
A A
Source Device
HDMI 1
Display HDMI 2 Display DP Display
Extend Mode
Click the Apple Icon " " > "System Preferences" >
"Displays" > cancel the "Mirror Displays" option
B
A
C D
Source Device
HDMI 1
Display HDMI 2 Display DP Display
⸺ 4 ⸺

1. What functions does the 3.5mm audio port support?
Audio Issues
Please refer to the table below:
2. I can't hear any sound, is there any solution?
The computer system would automatically select HDMI or 3.5mm audio port to output an audio signal when attached to the dock.
You also can enter the "Sound settings" to select the corresponding output device.
2. Can I connect the HDMI 1 4K, HDMI 2 8K, and DP port simultaneously? What's the maximum resolution?
Yes. As shown in the table below:
3. The monitor displays correctly after a black screen when plugging and unplugging the dock, is it normal?
Yes. The monitor will display images after the EDID reading. This usually takes about 10s.
Systems Display HDMI 2 HDMI 1/DP
Single display 8K@30Hz Max. 4K@60Hz Max.
Single/Multiple displays 4K@60Hz Max.
Multiple displays (Same contents) 4K@60Hz Max.
Multiple displays (Different contents) 8K@30Hz Max. 4K@60Hz Max.
macOS
Windows
1. How many devices can this docking station connect or charge?
Charging Issues
The detailed information is in the following table:
4 × USB (A+C) Total
Output Power 2.5-inch Hard Drive Charge Cellphone (5V/1.5A)
With an external PD power supply 15W
10W
2
1
1
1
Without an external PD power supply
Systems/
Function Supported
Microphone Line Control
Audio Input/Output Volume Up/Down Play/Pause Previous/Next
Windows
macOS
⸺ 5 ⸺

Specifications
· For the safety of data, please do not directly disconnect the storage device from this product. Before disconnecting, please safely remove the
programme.
· Do not throw or drop the product or subject it to strong physical shock.
· Do not dismantle or fix the product by yourself, please contact UGREEN after-sales service if necessary.
· When not in use for a long time, please carefully store the product to avoid dust and humidity.
· Please keep out of reach of children and pets.
Notices
Please feel free to contact us on Amazon if you need any support, you can follow the steps below:
1. Sign in to your Amazon account and navigate to "Your Orders".
2. Next to the relevant order, select "Problem with order".
3. Send your messages to us via "Contact seller".
After-sales
⸺ 6 ⸺
2. Why does my laptop fail to power charge when attached to the dock?
1. Make sure the external power supply is connected properly to the PD port < > and the laptop is connected correctly to the
USB-C port < >.
2. Make sure the notebook's USB-C port accepts power charging.
3. Disconnect and re-connect the dock cable to your computer.
3. Can I charge the device via the USB-A?
The USB-A port is mainly used for data transmission, and the charging speed will be very slow. Please connect to the PD power supply
first if you want to charge your devices.
Input 1々USB-C
Output 2×USB-C, 3×USB-A, 1×3.5mm Audio, SD/TF Card Slot, 1×DP, 2×HDMI, 1×RJ45
USB Port
Video Supports resolutions of up to 4K@60Hz and backward compatibility
Supports resolutions of up to 8K@30Hz and backward compatibility
USB 3.2 Gen 2 supports theoretical transfer rate of up to 10Gbps
USB 3.2 Gen 1 supports theoretical transfer rate of up to 5Gbps
USB 3.2 Gen 2 supports theoretical transfer rate of up to 10Gbps
Supports resolutions of up to 4K@60Hz and backward compatibility
Audio Supports earphone & mic
HDMI 1
HDMI 2
USB-C
2×USB-A
USB-A
DP
3.5mm Audio
Card Reading SD 3.0 supports theoretical transfer rate of up to 104MB/sSD/TF Card Slot
Ethernet Auto-negotiation of 10/100/1000MbpsRJ45
Power Supply PD3.0, 20V/5A, backward compatibilityUSB-C
Compatible Systems Windows/macOS