UGREEN CM843 14-in-1 Laptop Docking Station

The UGREEN CM843 is a 14-in-1 laptop docking station with two HDMI ports and one DisplayPort, plus USB, card-reader, audio and Ethernet connections. Its multi-monitor modes depend on the operating system and the laptop’s USB-C video and power capabilities.

At a glance

Connect up to three external displays on Windows, with supported resolutions and refresh rates varying by the number of screens and output used.
The dock lists HDMI, DisplayPort, multiple USB ports, SD and microSD readers, Gigabit Ethernet and 3.5 mm audio among its 14 connections.
Laptop charging is rated up to 100W, while a separate USB-C output is rated up to 20W. Their combined maximum is 100W when both are used.
On macOS, external displays mirror rather than showing separate extended content.

Price

£89.99Save 31%

Reference price: ~~£129.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Combines display outputs, wired networking, card readers and audio in one dock for a consolidated desk connection.
Windows users can connect up to three external displays, with separate content on each according to the listing.
The 100W upstream USB-C port supports laptop charging, subject to the laptop supporting Power Delivery.
Provides Gigabit Ethernet and SD and microSD slots for wired network and card-based workflows.

Cons

macOS users cannot use this dock for multiple independent extended external displays. The listing says they mirror the same content.

Technical specifications

25 specifications

Identity
Brand	UGREEN
Model	CM843

Connections
Total ports	14
HDMI ports	2
USB ports (listing details)	3
Port configuration	14 ports in total: 2× HDMI, 1× DisplayPort, 1× Gigabit Ethernet, 1× USB‑C Upstream, 1× USB‑C PD (20 W), 2× USB‑C 10 Gbps, 1× USB‑A 10 Gbps, 2× USB‑A 5 Gbps, SD, microSD, 3.5 mm audio.
USB-C and USB-A data speeds	10Gbps
USB-A rear-port speed	Two rear USB‑A ports support up to 5 Gbps.
Ethernet speed	Gigabit Ethernet at up to 1,000 Mbps
SD and microSD transfer speed	170MB/s

Display
Three-monitor mode (Windows)	up to three 4K displays at 30Hz
Two-monitor mode	4K@60Hz
Single DisplayPort display	up to 4K@120Hz or 8K@30Hz
Single DisplayPort requirements	This requires a laptop with DisplayPort 1.4 and DSC (Display Stream Compression).
macOS display behaviour	On macOS, multiple external monitors can only mirror the same content across all displays

Power and compatibility
Laptop USB-C power delivery	100W
USB-C PD output	20W
Combined power when both USB-C PD ports are used	The 100 W upstream port and the 20W output share a combined maximum of 100W.
Power adapter	140 W DC power adapter
Supported connections	USB-C, USB4, and Thunderbolt
Operating systems	Windows 10 and 11 and macOS
Laptop connection requirements	The laptop port must support Power Delivery and DisplayPort Alt Mode

Other listing details
Hardware interface	USB Docking Station
Manufacturer part number	55892A
Country of origin	China

What to know before buying

Listing details to confirm

Display output requires laptop DisplayPort Alt Mode and laptop charging requires Power Delivery. The listing describes three-screen Windows output at up to 4K@30Hz, while its detailed configuration specifies HDMI outputs at 4K@60Hz and DisplayPort at 4K@30Hz. It also gives different laptop-charge timing claims, 50% in 32 minutes and approximately 27 minutes under stated conditions, so neither timing should be treated as assured. The listing says 3 USB ports in one specification but enumerates five USB-A ports and three USB-C data ports in its 14-port layout. Confirm the port and display configuration for the intended setup before buying.

Who is it for?

A good fit for

Windows laptop users wanting several external displays and a range of desk peripherals connected through one dock.
Users who need wired Gigabit Ethernet or SD and microSD card slots alongside monitor connections.
Laptop users seeking a dock with a claimed 100W upstream charging capability, provided their laptop supports Power Delivery.

Less suited to

MacBook users who need multiple external monitors to show different content in extended mode.
Users whose laptop lacks USB-C, USB4 or Thunderbolt connectivity with DisplayPort Alt Mode and Power Delivery support.

UGREEN CM843 14-in-1 Laptop Docking Station · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 102 ratings

5 stars70%70%
4 stars24%24%
3 stars4%4%
2 stars2%2%
1 star0%0%

The supplied evidence contains aggregate star ratings but no customer-comment summary, so it does not establish particular praised features or reported problems. The rating distribution is mostly in the upper categories, with a smaller share in the lower ones. Treat that as a broad signal only, not evidence that the dock’s stated display modes or charging performance will suit a specific laptop.

Frequently asked questions

Can the UGREEN CM843 run three external monitors?

The listing claims support for up to three external displays on Windows. Its detailed configuration gives two HDMI outputs at 4K@60Hz and DisplayPort at 4K@30Hz for a three-display setup. macOS external displays mirror rather than extend independently.

Will it work with any USB-C laptop?

No. The laptop connection needs DisplayPort Alt Mode for video and Power Delivery for laptop charging. USB4 or Thunderbolt connections are also listed as supported.

How much power can it deliver to a laptop?

The upstream USB-C port is rated up to 100W. When the separate 20W USB-C output is also in use, the two ports share a combined maximum of 100W, so each may deliver less than its individual rating.

Are all USB ports 10Gbps?

No. The listing identifies 10Gbps data ports and says two rear USB-A ports support up to 5 Gbps. Its separate total-USB-port field conflicts with the detailed port layout, so confirm the configuration if port count matters.