UGREEN CM555 User Manual

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
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UGREEN CM555 Specifications

General

Brand	UGREEN
Model	CM555
Category	Docking Station
Language	English