UGREEN 75126 6-in-1 Handheld Gaming Dock, HDMI 4K120
Overview
UGREEN 75126 is a foldable hdmi gaming dock with 4k120, variable-refresh support, three 5gbps data ports, ethernet and pd input.
What it does well.
Key features
At a glance
HDMI 4K120. HDMI 2.1 supports up to 4K120 with compatible host, GPU, cable, monitor and settings.
VRR / FreeSync / G-Sync. Two USB-A and one USB-C data port are each up to 5Gbps and share upstream bandwidth.
3 × USB 5Gbps. PD input accepts up to 100W and can provide up to 85W to a compatible host.
85W host power. Steam Deck living-room gaming
Every connection explained
Port-by-port clarity
HDMI 2.1. Up to 4K120; backward modes include 1440p144 and 1080p360 when the full chain supports them.
2 × USB-A 3.0. Up to 5Gbps data.
USB-C 3.0 data. Up to 5Gbps; gallery says not for display.
RJ45 Gigabit Ethernet. Up to 1000Mbps.
USB-C PD input. Up to 100W input; up to 85W to the host.
Detachable USB-C host cable. 25cm cable supports flexible placement and replacement.
Resolution, topology and host limits
Display planning
HDMI 2.1 supports up to 4K120 with compatible host, GPU, cable, monitor and settings.
Official material lists VRR, FreeSync and G-Sync compatibility, but each requires support across the host, display, cable and software.
A handheld may output a high-resolution signal without rendering a demanding game at that frame rate.
Only one HDMI display is supported; there is no DisplayPort output.
USB, card and network performance
Shared resources
Two USB-A and one USB-C data port are each up to 5Gbps and share upstream bandwidth.
The USB-C data port is not a display output and is not the PD input.
Gigabit Ethernet performance depends on network equipment and service.
Use scenarios
Real-world applications
Steam Deck living-room gaming. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
ROG Ally / Ally X desk setup. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
Legion Go external-monitor workstation. A practical fit when the ports, display topology, bandwidth and power limits above match the host and peripherals.
Portable wired-network and controller station. 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 ROG Xbox Ally families. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
Legion Go and other suitable USB-C handhelds. Compatibility means only the functions exposed by the specific host port and operating system; connector shape is not enough.
Laptops, Macs and phones only for functions supported by their USB-C ports. 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 handheld in a two-position/foldable stand
- Outputs one HDMI display up to 4K120
- Adds three 5Gbps data ports and Gigabit Ethernet
- Accepts 100W PD input and provides up to 85W host power
What this product does not do
Boundaries
- It does not guarantee 4K120 game rendering.
- The USB-C data port cannot output video.
- It does not include a wall charger.
- It does not add a second display output.
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. Keep handheld intake and exhaust vents clear; cases can alter fit and airflow.
Warning / limitation 2. Use a suitable HDMI 2.1 cable/display for 4K120 and variable refresh.
Warning / limitation 3. Connect the charger only to the PD-labelled port.
Warning / limitation 4. Do not expect a device to accept more power than its own charging controller allows.
At a glance.
- Model
- SKU 75126
- Video
- HDMI 2.1 up to 4K120
- Adaptive refresh
- VRR, FreeSync and G-Sync compatibility listed
- USB
- 2 × USB-A 5Gbps; 1 × USB-C 5Gbps data
- Network
- Gigabit Ethernet
- PD
- 100W input; up to 85W host output
- Stand
- Foldable, up to 90° / two-position support
- Host cable
- Detachable USB-C, approximately 25cm
- Body
- Aluminium alloy with PC+ABS components
- Bandwidth rule
- All downstream functions share the upstream host connection
- Maximums
- Require compatible host, cables, peripherals, displays and software
Model-specific data
Power path
PD input accepts up to 100W and can provide up to 85W to a compatible host.
Official gallery examples show device-specific charging ceilings such as 30W ROG Ally Turbo and 45W Steam Deck OLED; the host decides what it accepts.
Charger and charging cable are not included; the detachable 25cm host cable is part of the dock system.
Questions buyers ask.
What model is this?
This guide is for UGREEN 75126 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?
PD input accepts up to 100W and can provide up to 85W to a compatible host. Official gallery examples show device-specific charging ceilings such as 30W ROG Ally Turbo and 45W Steam Deck OLED; the host decides what it accepts.
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?
HDMI 2.1 supports up to 4K120 with compatible host, GPU, cable, monitor and settings. Official material lists VRR, FreeSync and G-Sync compatibility, but each requires support across the host, display, cable and software.
Can I use it with a Mac?
Laptops, Macs and phones only for functions supported by their USB-C ports
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.