UGREEN 55733 9-in-1 Handheld Gaming Dock, DisplayPort 4K120
Overview
UGREEN 55733 is a foldable stand-dock with displayport rather than hdmi, plus fast data, cards, ethernet and pd input.
What it does well.
Key features
At a glance
DisplayPort 4K120. The dock uses DisplayPort, not HDMI. A DisplayPort cable and compatible monitor are required.
10Gbps USB data. The USB-C 10Gbps and USB-A 10Gbps ports share host bandwidth with Ethernet and both card readers.
SD + TF. The PD socket is charging input only and does not transfer data.
100W PD input. Steam Deck desktop gaming setup
Every connection explained
Port-by-port clarity
DisplayPort. Up to 4K120 on a fully compatible DP 1.4 display chain.
USB-C PD input. Charging input only; up to 100W input and up to 85W to the host.
USB-C 3.2 data. Up to 10Gbps; no display output or charging.
USB-A 3.2 data. One up to 10Gbps data port.
2 × USB-A 2.0. Up to 480Mbps each for controllers, keyboard, mouse or receivers.
RJ45 + SD + TF. Gigabit Ethernet and two card slots advertised up to 104MB/s.
Resolution, topology and host limits
Display planning
The dock uses DisplayPort, not HDMI. A DisplayPort cable and compatible monitor are required.
Up to 4K120 requires the host GPU/USB-C display mode, dock, DP 1.4 cable and monitor to support it. Official guidance specifies a DP 1.4 cable no longer than 3m and 28AWG for this maximum.
Lower modes such as 4K60, 1440p high refresh or 1080p are negotiated according to the host and display.
The dock cannot make a handheld render games at 4K120; output capability and real frame rate are separate.
USB, card and network performance
Shared resources
The USB-C 10Gbps and USB-A 10Gbps ports share host bandwidth with Ethernet and both card readers.
Two USB-A 2.0 ports are intentional low-speed accessory ports; do not connect a fast SSD expecting 10Gbps.
SD and TF are advertised up to 104MB/s; actual card speed depends on the card and workload.
Use scenarios
Real-world applications
Steam Deck desktop gaming setup. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
ROG Ally or Legion Go wired desk. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
DisplayPort gaming monitor plus Ethernet. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
Photo/media transfer from SD or microSD. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
Setup and usability guidance
Practical connection order
- Confirm this SKU on the product or invoice.
- Check the host port for required video, data and charging roles.
- Place the hub/dock on a stable, open surface; place stand models before loading a device.
- Connect required external power before the host when the model requires or benefits from it.
- Connect the host using the marked upstream lead or port.
- Attach one display first and confirm a stable picture before adding others.
- Add Ethernet, storage, cards and low-speed peripherals one group at a time.
- Configure display arrangement, resolution and refresh in the operating system.
- Eject storage/cards before unplugging; disconnect high-power accessories before packing.
Compatible devices and systems
Host and peripheral fit
Steam Deck and Steam Deck OLED. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
ROG Ally / Ally X and Legion Go families. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
USB-C iPad, phone or laptop only when its port supports the required data/video/power roles. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
DisplayPort monitor with a suitable DP cable. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
What this product does
Function scope
- Holds a compatible handheld in an adjustable stand
- Outputs DisplayPort video up to 4K120 in a qualified chain
- Adds fast and low-speed USB ports, cards and Gigabit Ethernet
- Accepts 100W PD input and can deliver up to 85W to the host
What this product does not do
Boundaries
- It has no HDMI output.
- The USB-C data port cannot charge or output video.
- It cannot guarantee a game's render resolution or frame rate.
- It does not include a wall charger.
What to do
Recommended practice
- Match the SKU before ordering.
- Use qualified display, Ethernet and USB-C cables.
- Connect external power when specified or when bus-powered storage is unstable.
- Keep firmware, OS and relevant drivers current.
- Test the simplest connection first, then add devices.
What not to do
Avoid common mistakes
- Do not assume every USB-C port carries video, data and power.
- Do not add individual port maxima to claim an aggregate throughput.
- Do not cover the hub or place it on heat-trapping fabric.
- Do not remove storage/cards during writes.
- Do not force connectors, stand hinges or devices that do not fit.
Warnings and limitations
Read before use
Warning / limitation 1. Do not block the handheld intake or exhaust; reposition the adjustable cradle if a case changes the fit.
Warning / limitation 2. Use the PD-labelled port only for charging input and the 10Gbps-labelled USB-C port only for data.
Warning / limitation 3. Use a qualified DP 1.4 cable within the guidance for 4K120.
Warning / limitation 4. Eject cards and storage before disconnecting; keep the aluminium dock ventilated.
At a glance.
- Model
- SKU 55733, 9-in-1 handheld gaming dock
- Video
- DisplayPort up to 4K120
- USB-C data
- 1 × up to 10Gbps, data only
- USB-A
- 1 × up to 10Gbps; 2 × up to 480Mbps
- Cards
- SD + TF/microSD, up to 104MB/s advertised
- Network
- Gigabit Ethernet
- PD
- 100W input; up to 85W host output
- Stand
- Foldable / adjustable
- Host requirement
- USB-C data plus compatible DisplayPort Alt Mode for video
- Bandwidth rule
- All downstream functions share the upstream host connection
- Maximums
- Require compatible host, cables, peripherals, displays and software
Model-specific data
Power path
The PD socket is charging input only and does not transfer data.
With a compatible 100W charger and cable, up to 85W can reach the handheld/host while power is reserved for dock operation.
Charger is not included. Choose a charger at least 15W above the host's desired input when aiming for the dock's ceiling.
Questions buyers ask.
What model is this?
This guide is for UGREEN 55733 only. Similar UGREEN hubs and docks can use different video, data and charging controllers.
What must my USB-C host support?
Use a host that supports the connection and operating-system capabilities stated in this model guide.
Can every port reach its maximum at the same time?
No. Displays, USB storage, cards and Ethernet share the upstream host link and available power. Individual port labels are ceilings, not simultaneous aggregate guarantees.
Will it charge my laptop or handheld?
The PD socket is charging input only and does not transfer data. With a compatible 100W charger and cable, up to 85W can reach the handheld/host while power is reserved for dock operation.
Is the wall charger included?
No wall charger is listed in the base package unless your retailer explicitly sells a charger bundle.
Does it support an external display?
The dock uses DisplayPort, not HDMI. A DisplayPort cable and compatible monitor are required. Up to 4K120 requires the host GPU/USB-C display mode, dock, DP 1.4 cable and monitor to support it. Official guidance specifies a DP 1.4 cable no longer than 3m and 28AWG for this maximum.
Can I use it with a Mac?
Compatible functions depend on the Mac model, chip and available port.
Is driver installation required?
The native USB/DP Alt Mode functions are designed to be plug-and-play. Keep the operating system, GPU, USB/Thunderbolt and network drivers current. No DisplayLink claim is made unless explicitly stated.
Is it normal for the hub to become warm?
Some warmth is normal when converting video, network, data and power in a compact enclosure. Keep it uncovered and disconnect it if heat becomes abnormal or operation unstable.
What should I check if a display is blank?
Confirm DP Alt Mode, reconnect power where required, use a qualified display cable, select the correct monitor input, lower resolution/refresh, and update host graphics/USB drivers.
Can I disconnect it while copying files?
Stop transfers and safely eject storage or cards first. Removing the hub during a write can corrupt open files or the filesystem.