UGREEN CM449 USB 3.0 to HDMI & VGA Display Adapter (20518)
Model-specific connection guide
UGREEN CM449 USB 3.0 to HDMI & VGA Display Adapter (20518)
Add mirrored HDMI and VGA outputs up to 1080p60 from a Windows PC’s USB-A 3.0 port with UGREEN 20518. Display-driver installation is required.
Overview
UGREEN CM449 model 20518 is an active USB-A 3.0 graphics adapter for adding an HDMI output and a VGA output to a compatible Windows computer. It converts USB data into one additional display signal and therefore requires the correct UGREEN display driver. With USB 3.0 bandwidth and compatible equipment, the external output supports up to 1920 × 1080 at 60Hz. HDMI and VGA may be connected together, but both external connectors show the same image rather than two independent desktops.
Key features
The points below describe the exact UGREEN SKU and the conditions required to obtain its stated performance.
Adds display connectivity through a USB-A 3.0 port when the computer lacks a suitable native HDMI or VGA output.
HDMI and VGA outputs support up to 1920 × 1080 at 60Hz with the correct Windows driver and USB 3.0 host connection.
Both outputs can be used together for two displays showing the same external image; they do not become two independent display channels.
HDMI carries compatible digital video and audio, while VGA provides analogue video only.
Compact aluminium-alloy housing and an approximately 15cm attached USB lead suit portable presentation and desk use.
Active USB graphics design can provide mirror or extended-desktop use relative to the computer’s main screen, as allowed by Windows and the installed driver.
Understand the single-display-channel design
The adapter has two physical output sockets but creates one logical external display channel. Choosing the intended screen arrangement before installation prevents the common mistake of expecting two independent external desktops.
Connect either HDMI or VGA and use Windows duplicate or extend mode relative to the computer’s main screen after installing the exact UGREEN driver.
Connect HDMI and VGA together when the same presentation or information must appear on both external displays. Both outputs share the adapter’s one generated image.
This model does not provide that arrangement from its two sockets. Use two separately supported graphics outputs or a dock designed to expose two independent display channels.
Exact-model documentation says HDCP is unsupported. Choose a native graphics output for protected streaming or disc playback rather than relying on this office/presentation adapter.
Use scenarios
Add an HDMI monitor to a Windows desktop or laptop that has a spare USB-A 3.0 port.
Connect a Windows presentation computer to a VGA projector when no native VGA output is available.
Feed the same external presentation image to one HDMI display and one VGA display at the same time.
Create one additional Windows workspace for documents, reference material or office applications after installing the driver.
Setup and usability guidance
Before purchase, confirm a compatible Windows system, an available USB-A 3.0 port and permission to install UGREEN’s driver.
Download the exact driver for model 20518 from UGREEN’s official driver page. Install it and restart if the installer requests this.
Connect the adapter directly to a USB 3.0 port, then attach an HDMI or VGA cable to the display and select the matching input.
Use Windows display settings to choose duplicate or extend relative to the computer’s primary display.
If both HDMI and VGA are connected, expect the two external displays to show the same image. For audio, select the HDMI display as the Windows sound output.
If 1080p60 is unstable, reconnect directly without a USB hub, update the driver and test a lower output mode.
Compatible devices and systems
Designed for compatible Windows computers with a USB-A 3.0 port and the current UGREEN display driver. The current manufacturer driver listing for this model is Windows-only; do not buy it for macOS, Linux, ChromeOS, Android or iPadOS unless UGREEN later publishes an exact-model driver for that platform. HDMI displays need an HDMI cable; VGA displays need a VGA cable. USB 3.0 is required for the stated Full HD 60Hz performance.
What this product does
- Creates one additional logical display connection from a Windows PC through USB-A 3.0.
- Outputs up to 1080p60 through HDMI or VGA with a compatible driver and hardware.
- Lets HDMI and VGA display the same external image when both are connected.
- Carries audio through HDMI when Windows and the receiving display select a supported format.
What this product does not do
- It does not create two independent external desktops from its HDMI and VGA connectors.
- It does not work as a passive cable; driver installation is mandatory.
- It does not accept HDMI or VGA as an input and is not a capture device.
- It does not support 4K output, HDCP-protected playback, HDR, 3D or HDMI-CEC.
- It does not carry audio through VGA and does not add USB charging or data ports.
What to do
- Download drivers only from UGREEN’s official support pages.
- Use a direct USB 3.0 connection for the stated 1080p60 capability.
- Confirm that workplace or school computers allow display-driver installation.
- Select duplicate or extend in Windows after the driver is active.
- Keep a copy of the exact driver package available before travelling to a presentation.
What not to do
- Do not purchase for macOS based on older regional copy; current exact-model driver support is Windows-only.
- Do not expect the HDMI and VGA sockets to create two separate extended screens.
- Do not use it for game capture, recording or protected streaming-video bypass.
- Do not unplug it during driver installation or operating-system restart.
- Do not suspend the adapter by heavy HDMI or VGA cables.
Warnings and limitations
- This is a software-driven USB graphics adapter. A computer that blocks third-party drivers cannot use it.
- UGREEN regional compatibility pages are inconsistent; the current driver listing and exact-model documentation support Windows, so macOS is not promised.
- HDMI and VGA share one generated display image when used together. To obtain two independent external desktops, use separate supported display adapters or a dock designed for that topology.
- HDCP is not supported, so protected streaming or disc content may show an error or blank image.
- USB hubs, older USB ports, high system load and outdated drivers can reduce refresh rate or stability.
Technical specifications
| Brand / model | UGREEN CM449 / SKU 20518 |
|---|---|
| Host connector | USB-A 3.0 male |
| Display outputs | 1 × HDMI female; 1 × VGA female |
| Maximum stated output | 1920 × 1080 at 60Hz |
| Dual-output behaviour | HDMI and VGA show the same external image |
| Audio | HDMI can carry audio; VGA is video-only |
| Driver | Required; obtain the exact-model driver from UGREEN |
| Current documented OS target | Compatible Windows computer; current manufacturer driver listing is Windows-only |
| Unsupported media features | HDCP, HDR, 3D and CEC are not supported in exact-model documentation |
| Attached lead | Approximately 15cm |
| Housing | Aluminium alloy with ABS/PC components |
| Signal direction | USB-A host to HDMI/VGA display output |
Package contents
- 1 × UGREEN CM449 USB 3.0 to HDMI/VGA adapter (SKU 20518).
- 1 × user manual. HDMI and VGA cables are not listed as included.
Product-specific FAQ
Does this adapter work without software?
No. Model 20518 is an active USB graphics adapter and requires the correct UGREEN display driver.
Which operating system should I use?
Current exact-model manufacturer driver information is Windows-only. macOS, Linux, ChromeOS, Android and iPadOS are not promised.
Can it output 1080p at 60Hz?
Yes, up to 1920 × 1080 at 60Hz with USB 3.0, the correct driver, sufficient computer performance and a compatible display.
Can HDMI and VGA work together?
Yes, but both external displays show the same image. The two sockets do not provide two independent display channels.
Can I extend my Windows desktop?
The adapter can act as one additional logical display and Windows can extend to it. If both outputs are attached, HDMI and VGA mirror that same external workspace.
Does it send audio?
HDMI can carry compatible audio. VGA carries video only.
Will protected streaming video work?
Do not rely on it. Exact-model documentation says HDCP is not supported, so protected content can fail or appear blank.
Is this a video-capture adapter?
No. It sends a Windows computer’s display out to HDMI/VGA; it does not accept or record an incoming HDMI signal.
Can I use a USB 2.0 port?
The stated 1080p60 performance requires USB 3.0. An older or bandwidth-limited connection may reduce performance and is not the recommended setup.
What should I do if Windows shows no display?
Install or update the exact UGREEN driver, restart, connect directly to USB 3.0, select the display input and then use Windows Detect in display settings.
Confirm the exact UGREEN model
Use SKU 20518 on the product label or retail package as the reference for these specifications. Similar-looking UGREEN variants can have different cable lengths, connector layouts, output limits or compatibility requirements.
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