UGREEN 85489
UGREEN 85489 14-Port Triple-Display USB-C Dock
A powered vertical desktop dock with two DisplayPort outputs, HDMI, fast USB data, card readers, Gigabit Ethernet, audio and coordinated charging for a compatible USB-C laptop.
Product introduction
Overview
UGREEN 85489 is a powered 14-port USB-C desktop docking station built around a vertical, actively ventilated enclosure. It places two DisplayPort connectors, HDMI, wired networking and power connections at the rear while frequently used USB, card and audio connections remain accessible at the front.
The two DisplayPort outputs can each support a single display up to 8K 30Hz or 4K 120Hz in a fully compatible chain; HDMI supports up to 4K 60Hz. A compatible Windows USB-C host with the required DisplayPort Alt Mode and graphics capability can use three external displays up to 4K. macOS follows SST for this dock, so attached external screens show the same external desktop rather than independent extended desktops.
At a glance
Key features
Port-by-port clarity
A powered 14-port workstation map
Display group
Two DisplayPort outputs plus one HDMI output. The Windows/macOS display behaviour and host graphics limits must be checked before planning three screens.
USB data group
Two front USB-C and two USB-A data connections, with up to 10Gbps on the verified high-speed interfaces and shared upstream bandwidth.
Network, cards and audio
Gigabit Ethernet, SD and TF/microSD readers up to 170MB/s, and a 3.5mm audio connection for a complete desk.
Power group
DC input from the included 140W supply, up to 100W laptop charging through the host link and up to 27W from the designated USB-C PD output.
Display architecture
High-resolution outputs with operating-system-specific layouts
For a single high-refresh or high-resolution monitor, an individual DisplayPort can reach the stated ceiling of 4K 120Hz or 8K 30Hz when the host graphics, USB-C video path, cable and monitor all support it. HDMI is listed up to 4K 60Hz. Adding displays can reduce the maximum mode because the host shares available DisplayPort bandwidth.
- Confirm that the laptop USB-C port carries DisplayPort Alt Mode.
- Check the host GPU limit for display count, resolution and refresh rate.
Power and data allocation
One supplied power system, several negotiated outputs
The dock includes a 140W power supply. It can allocate up to 100W to a compatible laptop and up to 27W from the front USB-C PD output, but these values are not additive independent power sources. The stated combined budget is 100W, so simultaneous charging reduces the allocation available to the laptop or the secondary device.
- Use the included supply for full dock operation.
- Connect the host with the supplied 1m USB-C cable.
Real-world applications
Use scenarios
Choose this exact model when its verified connections and limits match the workflow below.
Windows multi-monitor desk
Run up to three compatible 4K external displays with wired networking and shared USB data from one full-featured USB-C host.
Creative workstation
Attach a high-resolution display, SD/TF media, fast USB storage and audio while keeping the laptop powered.
Office hot desk
Leave monitors, LAN, power and peripherals connected to the dock, then attach a compatible laptop with one host cable.
macOS single-desktop expansion
Use several external screens for mirrored/SST content plus data, network and charging, acknowledging the external-display duplication limit.
Practical connection order
Setup and usability guidance
A deliberate connection order makes capability checks and troubleshooting easier.
- Place the dock upright on a stable desk with clear ventilation.
- Connect the included 140W power supply and power cord to the dock and mains.
- Use the supplied 1m USB-C cable between the host port and a full-featured USB-C port on the laptop.
- Attach one monitor, select its input and verify a stable supported mode.
- Add the second and third displays while checking the host graphics limits and operating-system display settings.
- Connect Ethernet, storage, cards, audio and low-priority USB peripherals one group at a time.
Host and peripheral fit
Compatible devices and systems
Connector shape alone is not enough: the host port, operating system, cable, display and peripheral must support the required function.
Windows hosts
USB-C laptops with DisplayPort Alt Mode and sufficient GPU display support; triple independent 4K operation depends on the exact host.
macOS hosts
Compatible USB-C Macs can use the dock, but external monitors display the same external desktop because macOS uses SST here.
Displays
DisplayPort and HDMI monitors, televisions or projectors within the dock, host and cable limits.
Desk peripherals
USB-C/USB-A storage and accessories, SD/TF cards, Gigabit Ethernet and 3.5mm audio devices.
Verified function scope
What this product does
- Adds two DisplayPort outputs and one HDMI output to a compatible video-capable USB-C host.
- Supports triple 4K external display use on compatible Windows systems.
- Charges a compatible laptop up to 100W with the included dock supply.
- Provides USB-C and USB-A data, SD/TF card reading, Gigabit Ethernet and 3.5mm audio.
Boundaries that prevent a mismatch
What this product does not do
- It does not give macOS three independent extended external desktops; external screens use SST and show the same content.
- It does not guarantee 8K, 4K 120Hz or triple 4K from every USB-C laptop.
- It does not deliver 100W to the laptop and an additional independent 27W simultaneously.
- It does not turn a data-only USB-C port into a video output.
Recommended practice
What to do
- Check Windows or macOS display behaviour before choosing a three-screen layout.
- Use the supplied power supply and host cable.
- Use certified display cables appropriate for high-resolution or high-refresh modes.
- Keep ventilation openings clear and support heavy rear cables.
Avoid common mistakes
What not to do
- Do not expect macOS external screens to act as independent desktops with this SST dock.
- Do not add the 100W and 27W labels as simultaneous independent outputs.
- Do not assume any USB-C port supports display output.
- Do not cover the ventilated enclosure or operate it on soft fabric.
Read before use
Warnings and limitations
Check before connecting or ordering
- The host USB-C port must support video output; connector shape alone is not sufficient.
- Triple 4K is conditional on a compatible Windows host and GPU. macOS external screens are duplicated rather than independent.
- Single DisplayPort maxima of 8K 30Hz or 4K 120Hz require a fully compatible source, cable and display and may fall when multiple screens are active.
- The included 140W supply supports the dock; up to 100W laptop charging and up to 27W secondary USB-C charging share a 100W allocation.
- USB and card speeds are shared interface maxima, not guaranteed file-transfer results.
- Confirm whether the 3.5mm port mode matches the required headset or speaker connection in the host OS.
Warning / limitation 1
High-resolution display modes depend on the host GPU, USB-C video capability, cable, monitor input and the number of attached screens.
Warning / limitation 2
Changing display count can trigger renegotiation and a temporary blank screen while the operating system rebuilds the display topology.
Warning / limitation 3
The charger reallocates power between the laptop and USB-C charging output; a brief charging change can be normal.
Warning / limitation 4
Multiple USB and card transfers share host bandwidth and can reduce measured speed.
Model-specific data
Technical specifications
| Specification | Verified detail |
|---|---|
| Brand / SKU | UGREEN 85489 |
| Product type | Powered 14-port USB-C desktop docking station |
| Display outputs | 2 × DisplayPort; 1 × HDMI |
| DisplayPort maximum | Single output up to 8K 30Hz or 4K 120Hz in a compatible chain |
| HDMI maximum | Up to 4K 60Hz |
| Multi-display | Triple 4K on compatible Windows hosts; macOS external screens duplicated via SST |
| Laptop charging | Up to 100W |
| Secondary USB-C charging | Up to 27W; shares the combined 100W allocation |
| USB data | 2 × USB-C and 2 × USB-A data connections; verified interfaces up to 10Gbps |
| Card readers | SD and TF/microSD up to 170MB/s |
| Ethernet | Gigabit RJ45 |
| Audio | 3.5mm audio connection |
Verified in-box information
Package contents
- 1 × UGREEN 85489 14-port docking station.
- 1 × 140W power supply.
- 1 × AC power cord.
- 1 × approximately 1m USB-C host cable.
Display cables, Ethernet cable, memory cards, USB peripherals and a phone-charging cable are not identified as included. Verify regional plug format on the supplied AC cord before deployment.
Model-specific answers
Product-specific FAQ
Can UGREEN 85489 run three 4K displays?
A compatible Windows USB-C host and GPU can support triple 4K. The host port, graphics hardware, operating system, cables and displays must all support the selected modes.
Will three external monitors extend independently on a Mac?
No. Official material states that macOS external displays use SST and show the same external desktop.
Can one DisplayPort output reach 8K?
A single DisplayPort output can reach the stated 8K 30Hz ceiling in a fully compatible chain. Multi-display use or a lower-capability component can reduce the mode.
Does HDMI support 4K 60Hz?
Yes, HDMI is specified up to 4K 60Hz when the host video path, cable, display and settings support it.
Is the 140W power supply included?
Yes. Official package information lists the 140W supply, AC cord and approximately 1m USB-C host cable.
Will the laptop receive a full 100W while the 27W USB-C output is active?
Not necessarily. The laptop and secondary USB-C charging output share a stated 100W allocation, so simultaneous use reduces available power.
Are both front USB-C ports charging ports?
No. Keep the designated charging-output role separate from the USB-C data connections and follow the labels on the exact dock.
Do the card readers always reach 170MB/s?
170MB/s is the stated maximum. Actual speed depends on the card, reader mode, file pattern, host and concurrent transfers.
Does the dock require power?
Yes. It is designed as a powered desktop dock and the included supply is needed for the full charging and peripheral workflow.
Why did the screen briefly go blank after another display was attached?
The host may renegotiate resolution, refresh rate and display topology. Verify the cables, then choose modes within the host and dock limits.
Does it work through a data-only USB-C port?
Data functions may work, but display outputs require a host USB-C port with DisplayPort Alt Mode. Charging also depends on host Power Delivery support.
