UGREEN CM511 45521 • SEVEN-PORT 10GBPS USB-C HUB
4K 60Hz display, 10Gbps data, dual card access and PD charging
UGREEN CM511 / SKU 45521 adds one HDMI 2.0 output, two USB-C and one USB-A 3.2 data ports, separate SD and microSD readers, and up to 100W PD input to a compatible USB-C host.
Product overview
Overview
A clear view of the product before you connect it
CM511 is a compact seven-port hub for users who need faster storage connections than a 5Gbps hub provides. Two USB-C and one USB-A USB 3.2 data ports support up to 10Gbps theoretical with a compatible host, cable and peripheral.
One HDMI 2.0 output supports up to 4K at 60Hz and a compatible HDR10, HDCP 2.2 and 3D signal path. Separate SD and microSD readers can be accessed together, while the dedicated PD input keeps a supported laptop or tablet charged.
The host connection is still one shared USB-C link. Simultaneous storage transfers divide bandwidth, and actual performance depends on the host controller, drive, file workload and available power. A 100W input can provide up to about 95W to the host after hub consumption.
Product highlights
Key features
HDMI, three data ports, SD, microSD and dedicated PD input.
Single HDMI output with compatible HDR10 and HDCP 2.2 paths.
Two USB-C plus one USB-A data port at theoretical maxima.
Approximately 95W maximum host charging from a 100W PD input.
At a glance
Seven clearly separated display, data, card and power connections
1 × HDMI 2.0
Connect one display up to 4K at 60Hz with compatible HDR10, HDCP 2.2 and 3D support across the full path.
2 × USB-C 3.2 data
Connect compatible high-speed USB-C storage and peripherals at up to 10Gbps theoretical; no downstream video or 100W charging.
1 × USB-A 3.2 data
Connect compatible USB-A storage and peripherals at up to 10Gbps theoretical.
1 × SD reader
Access compatible SD, SDHC and SDXC memory cards.
1 × microSD/TF reader
Access compatible microSD, microSDHC and microSDXC cards at the same time as SD where supported.
1 × USB-C PD input
Accepts up to 100W from a compatible charger for up to about 95W stated host charging.
USB 3.2 PERFORMANCE
Move compatible files at up to 10Gbps theoretical
Use the two USB-C data ports and USB-A data port with compatible SSDs, drive enclosures, flash drives, card readers and professional peripherals. Reaching a 10Gbps link requires a 10Gbps host port, peripheral, cable and storage device.
Real throughput is lower than the theoretical link rate. All connected USB devices communicate through the attached host cable, so concurrent transfers divide the available upstream bandwidth.
- Two USB-C 3.2 data ports
- One USB-A 3.2 data port
- Up to 10Gbps theoretical
- Shared host bandwidth
- Actual speed depends on storage and workload
HDMI 2.0 DISPLAY
Connect one external screen at up to 4K 60Hz
Connect a compatible monitor, television or projector for presentations, productivity, video and creative work. The host operating system controls mirror or extended-desktop mode.
Supported resolution, HDR, protected playback and refresh rate depend on the source, USB-C video capability, content, application, HDMI cable and display. The host port must provide DisplayPort Alt Mode or compatible Thunderbolt/USB4 video.
- One HDMI 2.0 output
- Up to 3840 × 2160 at 60Hz
- Compatible HDR10 path
- Compatible HDCP 2.2 path
- One external display
CARDS + POWER DELIVERY
Read two card formats and charge the host while working
Separate SD and microSD readers support compatible camera, drone, dash-camera and mobile-device media. Both slots can be accessed together on a supported operating system, subject to shared bandwidth and card performance.
The dedicated PD input accepts up to 100W from a suitable charger and can provide up to approximately 95W to the host after hub consumption. Final charging depends on the charger, 5A E-Marker cable and host limit.
- SD + microSD simultaneous access
- Up to 100W PD input
- About 95W maximum host charging
- PD port is power input only
- Charger and charging cable not confirmed as included
Real-world workflows
Use scenarios
A fast compact hub for mobile professionals and creators
High-speed backup
Connect compatible 10Gbps storage and copy work files through a high-speed host port, remembering that simultaneous transfers share bandwidth.
Photo and video ingest
Read SD and microSD media, transfer to a USB-C or USB-A SSD and preview material on one HDMI display.
Portable workstation
Connect a monitor, keyboard, mouse, storage and charger using a compact aluminium hub with an attached braided lead.
Presentation and media
Use one 4K60 HDMI screen with compatible HDR and protected-content support across a compliant source-to-display path.
Compatibility
Compatible devices and systems
For high-function USB-C, USB4 and Thunderbolt host ports
Mac computers
Compatible MacBook, iMac and Mac mini USB-C or Thunderbolt ports can use the hub as a standard USB-C device within exact model limits.
Windows laptops
Compatible Dell, HP, Lenovo, ASUS, Acer and Surface systems can use supported display, USB data and charging functions.
Chromebooks and tablets
Supported ChromeOS, iPad and other USB-C tablets can use functions their operating system and port expose.
Thunderbolt hosts
The hub works through standard USB and DisplayPort functions but does not become a 40Gbps downstream Thunderbolt dock.
Important limitations
Check before buying
Check these points before ordering or connecting:
- The host port must support USB 10Gbps to reach the maximum data-link claim.
- HDMI requires DisplayPort Alt Mode, USB4 display output or compatible Thunderbolt video.
- This model directly supports one external display through HDMI.
- The two downstream USB-C ports are data ports; they are not monitor outputs, 100W charging outputs or downstream Thunderbolt ports.
- All USB devices share one upstream connection, so concurrent transfer rates fall.
- 100W is maximum PD input; about 95W is the stated maximum for the host and actual delivery can be lower.
- This model has no Ethernet, VGA, DisplayPort or 3.5mm audio connector.
- A PD charger, charging cable and HDMI cable are not confirmed as included.
Function boundaries
What it can—and cannot—do
What this product does
- Adds one HDMI 2.0 display output up to 4K60.
- Adds two USB-C and one USB-A data port up to 10Gbps theoretical.
- Reads compatible SD and microSD cards, including simultaneous access on supported systems.
- Accepts up to 100W PD input for up to about 95W stated host charging.
- Passes compatible HDR10, HDCP 2.2 and 3D video features when the full HDMI path supports them.
- Provides a compact aluminium enclosure and attached braided host cable.
What this product does not do
- It does not provide Ethernet, VGA, DisplayPort or a 3.5mm audio jack.
- It does not connect more than one external display directly.
- It does not output video or high-wattage PD through the two USB-C data ports.
- It does not provide downstream Thunderbolt, 40Gbps transfer, PCIe tunnelling or daisy chaining.
- It does not guarantee every storage transfer reaches 10Gbps.
- It does not guarantee the laptop receives 100W.
- It does not include a verified charger or HDMI cable.
Guided connection
Setup and usability guidance
Match each USB-C port to its correct role
- Confirm the host port supports USB data, the required 10Gbps rate, external video and charging as needed.
- Connect the attached braided USB-C lead directly to the host.
- Connect a compatible PD charger and rated cable to the dedicated PD input, not to a USB-C data port.
- Connect HDMI, select the display input and choose a supported mirror or extended-desktop mode.
- Connect high-speed storage to a data port and verify the host negotiates the expected link.
- Insert SD and microSD cards correctly and wait for them to mount before transferring files.
- Safely eject all storage and cards before disconnecting the hub.
Good practice
Do and avoid
What to do
- Use a 10Gbps-capable host, peripheral and cable chain for high-speed transfers.
- Use a suitable HDMI 2.0 cable for 4K60.
- Use a compliant 100W-class PD charger and 5A E-Marker cable when maximum host charging is required.
- Keep the aluminium enclosure uncovered to distribute normal operating heat.
- Use safe-eject before removing drives and cards.
- Test high-speed devices one at a time before starting concurrent transfers.
What not to do
- Do not connect the charger to a USB-C data port.
- Do not expect a USB-C data port to drive a monitor.
- Do not call the hub a Thunderbolt dock or expect 40Gbps functions.
- Do not cover the housing during sustained transfer, HDMI and PD use.
- Do not interrupt file writes or remove power during card transfers.
- Do not continue use with damaged, loose, wet or unusually hot connectors.
Safe operation
Warnings and limitations
Safety note 1
Mild warmth is normal because the aluminium enclosure distributes heat from data, video and charging circuits. Keep it open to airflow.
Safety note 2
The theoretical 10Gbps rate is not a guaranteed file-copy speed. Storage performance, protocol overhead, host controller and concurrent devices reduce throughput.
Safety note 3
4K60 and HDR require a compatible end-to-end path. A blank or downgraded image often indicates host-port, cable, content or display limitations.
Safety note 4
PD power is negotiated. An underspecified charger or cable reduces charging and can make power-hungry peripherals unstable.
Safety note 5
Removing a card or drive during a write can corrupt files. Use safe-eject and wait for activity to stop.
Verified specifications
Technical specifications
| Brand | UGREEN |
|---|---|
| Model | CM511 |
| SKU | 45521 |
| Product type | 7-in-1 USB-C hub with HDMI, USB data, card readers and PD input |
| Host connection | Attached braided USB-C male cable |
| HDMI | 1 × HDMI 2.0; up to 3840 × 2160 at 60Hz |
| HDMI features | Compatible HDR10, HDCP 2.2 and 3D pass-through |
| USB-C data | 2 × USB-C 3.2; up to 10Gbps theoretical |
| USB-A data | 1 × USB-A 3.2; up to 10Gbps theoretical |
| Shared bandwidth | All USB devices share the upstream USB-C connection |
| Card readers | 1 × SD and 1 × microSD/TF; simultaneous access supported |
| USB-C PD | Dedicated input up to 100W |
| Maximum stated host charging | Approximately 95W |
| Video requirement | DisplayPort Alt Mode, USB4 display output or compatible Thunderbolt video |
| External displays | One through HDMI |
| Ethernet/audio/VGA/DisplayPort | Not included |
| Material | Aluminium alloy |
| Approximate cable length | 20cm |
| Approximate dimensions | 11 × 1.95 × 2.3cm |
| Listed weight | 110g |
| Colour | Space grey |
In the box
Package contents
- 1 × UGREEN CM511 / 45521 7-in-1 USB-C hub with attached braided host cable
- Product documentation according to the applicable retail package
A USB-C PD charger, charging cable and HDMI cable are not verified as included. Plan a compatible 5A E-Marker charging cable when a 100W-class input is required.
Helpful answers
Product-specific FAQ
Which seven ports are included?
One HDMI, two USB-C data, one USB-A data, one SD slot, one microSD/TF slot and one USB-C PD input.
Does HDMI support 4K at 60Hz?
Yes, with a compatible USB-C video host, operating system, HDMI 2.0 cable and display.
How many external displays can it connect?
One. CM511 provides a single HDMI output.
Which ports support 10Gbps data?
The two USB-C 3.2 data ports and one USB-A 3.2 data port support up to 10Gbps theoretical with compatible equipment.
Can all three data ports sustain 10Gbps at once?
No guarantee. They share the hub's upstream USB-C bandwidth, so simultaneous transfers divide the available connection.
Do the USB-C data ports support monitors?
No. Display output is through HDMI. The downstream USB-C ports are intended for USB data peripherals.
Can the SD and microSD slots work together?
Yes on a compatible host system, although both share bandwidth with other active USB devices.
Will the laptop receive 100W?
The PD input accepts up to 100W and the stated maximum host charging is about 95W. Actual delivery depends on the host, charger and cable.
Is this a Thunderbolt dock?
No. It can connect to compatible Thunderbolt hosts as a USB-C hub but has no downstream Thunderbolt ports, 40Gbps data or PCIe tunnelling.
Does it include Ethernet or a headphone port?
No. CM511 45521 has neither RJ45 Ethernet nor a 3.5mm audio connector.
Are a charger and HDMI cable included?
They are not verified as standard package contents and should be planned separately.
Why does the aluminium body feel warm?
Moderate warmth is normal under sustained transfer, 4K display and PD charging. Keep it uncovered and disconnect it if heat becomes unusual or damage is present.
Exact-model verification
Research and source note
Exact CM511 / 45521 sources verify one 4K60 HDMI output, two USB-C plus one USB-A 10Gbps data ports, dual card access and 100W PD input with approximately 95W maximum host charging. The three exact live images are used as distinct large product views.
