UGREEN USB-C to HDMI & VGA Display Adapter, White (30843)
Model-specific connection guide
UGREEN USB-C to HDMI & VGA Display Adapter, White (30843)
Connect a DP Alt Mode USB-C laptop or tablet to HDMI or VGA with UGREEN 30843. Supports HDMI 4K30, VGA 1080p60 and driver-free operation.
Overview
UGREEN model 30843 is a compact USB-C display adapter with one HDMI output and one VGA output. It is intended for a laptop, tablet or phone whose USB-C port supports DisplayPort Alt Mode, allowing that device to connect to a modern HDMI display or a legacy VGA monitor or projector. HDMI supports video up to 4K at 30Hz with digital audio; VGA supports video up to 1920 × 1080 at 60Hz and does not carry audio. The adapter is bus-powered and normally requires no display driver.
Key features
The points below describe the exact UGREEN SKU and the conditions required to obtain its stated performance.
One adapter provides a choice of HDMI for modern displays or VGA for older monitors and projectors.
HDMI output supports up to 3840 × 2160 at 30Hz; lower resolutions and refresh rates depend on the source and display.
VGA output supports up to 1920 × 1080 at 60Hz for presentations and Full HD workspaces.
HDMI can carry video and audio, while VGA is video-only because VGA has no audio channel.
Approximately 15cm attached USB-C lead and a compact ABS body suit travel, meetings and shared desks.
Plug-and-play design uses the host device’s native USB-C video output rather than a separate software display driver.
Choose the correct output path for the display
HDMI and VGA serve different display types and carry different signals. Decide which one you need before connecting so the selected resolution, audio route and cable match the destination equipment.
Use HDMI for a television or modern monitor when you need digital audio or video up to 4K30. The source, HDMI cable and display input must all accept the selected format.
Use VGA for an older monitor or projector up to 1080p60. VGA is analogue video only, so route audio from the host through a separate connection if sound is needed.
The host port must output DisplayPort Alt Mode video. A USB-C port that only supports charging or USB data will produce no picture on either adapter output.
Official regional instructions disagree about simultaneous HDMI and VGA operation. Plan on one output for a guaranteed installation and check the supplied manual before relying on mirror-only dual output.
Use scenarios
Present from a DP Alt Mode USB-C laptop to an HDMI conference-room screen.
Connect a newer USB-C notebook to an older VGA classroom or office projector.
Use a compatible tablet or phone with an HDMI television for a larger mirrored view.
Keep one compact adapter in a travel kit when the available display connection is not known in advance.
Setup and usability guidance
First confirm that the host USB-C port explicitly supports DisplayPort Alt Mode, Thunderbolt or USB4 display output; the connector shape alone is not enough.
Choose one display path for dependable operation: connect either an HDMI cable or a VGA cable between the adapter and display.
Insert the adapter into the host, select the correct input on the monitor or projector, then choose a supported resolution in the device’s display settings.
For sound, use HDMI and select the HDMI display as the audio output. If using VGA, route sound separately from the host.
If dual-output use is essential, check the supplied unit’s manual before installation because official regional guidance for this SKU is inconsistent.
Compatible devices and systems
Works with computers, tablets and phones that output DisplayPort video through USB-C, including compatible Thunderbolt 3/4 and USB4 hosts. The display must accept HDMI or VGA. Operating-system mirror and extended-desktop options depend on the host hardware and OS; many phones and tablets provide mirroring only. A USB-C port used only for charging or USB data will not work. HDMI and VGA cables are required separately.
What this product does
- Converts a compatible USB-C DisplayPort video signal to HDMI or VGA.
- Carries up to 4K30 video and audio through HDMI with compatible equipment.
- Carries up to 1080p60 analogue video through VGA.
- Lets the user choose between a modern digital display and a legacy analogue display connection.
What this product does not do
- It does not make a non-video USB-C port output a picture.
- It does not support 4K at 60Hz; its stated HDMI ceiling is 4K30.
- It does not send audio through VGA.
- It does not charge the host or add USB data, Ethernet or card-reader ports.
- It does not promise two independent extended external desktops.
What to do
- Check the host specification for DP Alt Mode before buying.
- Use a cable and display input rated for the resolution you select.
- Use HDMI when both 4K video and display audio are required.
- Start at 1080p if a projector does not lock onto a higher format.
- Disconnect by holding the connector housings rather than pulling the attached cable.
What not to do
- Do not assume every USB-C port supports external video.
- Do not expect VGA to carry sound or HDR.
- Do not plan a guaranteed simultaneous HDMI-and-VGA installation from this SKU without checking the supplied manual.
- Do not connect the adapter backwards; HDMI and VGA are outputs, not inputs.
- Do not sharply fold the short attached lead or leave heavy cables hanging from it.
Warnings and limitations
- USB-C video capability is the decisive compatibility check; charging and data support do not prove DP Alt Mode.
- Official regional pages disagree about simultaneous HDMI and VGA operation. For a reliable purchase decision, treat the product as a one-display-at-a-time adapter unless the supplied regional documentation explicitly confirms mirror-only dual output.
- Even where simultaneous output is available, independent images on the two external screens are not supported; the published India guidance limits both to the same 1080p image.
- 4K30 requires a compatible source, HDMI cable, display input and content. VGA is limited to Full HD and image quality can vary with the analogue cable and projector.
- Mobile-device behaviour, orientation and streaming-app output restrictions are controlled by the device and app, not by the adapter.
Technical specifications
| Brand / SKU | UGREEN / 30843 |
|---|---|
| Host connector | USB-C male |
| Display outputs | 1 × HDMI female; 1 × VGA female |
| Host requirement | USB-C port with DisplayPort Alt Mode video output |
| HDMI maximum | Up to 3840 × 2160 at 30Hz |
| VGA maximum | Up to 1920 × 1080 at 60Hz |
| Audio | Via HDMI only; VGA is video-only |
| Power | Bus-powered from the USB-C host |
| Driver | No separate driver normally required |
| Attached lead | Approximately 15cm |
| Housing / colour | White ABS |
| Signal direction | USB-C video source to HDMI or VGA display |
Package contents
- 1 × UGREEN USB-C to HDMI/VGA adapter, white (SKU 30843). No HDMI cable, VGA cable, charger or separate power supply is listed as included.
Product-specific FAQ
How do I know whether my USB-C port will work?
Look for DisplayPort Alt Mode, Thunderbolt 3/4 or USB4 display-output support in the device specification. A USB-C port that only charges or transfers files cannot drive this adapter.
What is the maximum HDMI resolution?
The exact model is specified up to 3840 × 2160 at 30Hz. It is not a 4K60 adapter.
What is the maximum VGA resolution?
VGA is specified up to 1920 × 1080 at 60Hz with a compatible source, cable and display.
Does VGA carry audio?
No. VGA carries video only. Use the host device’s speakers or another audio connection.
Can HDMI and VGA be used at the same time?
Do not rely on that mode without checking the supplied manual. Official regional pages conflict; one describes mirror-only 1080p output, while another states the ports cannot operate simultaneously.
Can the two outputs show different content?
No independent dual-display promise is made. The India documentation says that when both work together they show the same 1080p image.
Does the adapter need a driver?
Normally no. It uses the USB-C host’s native DisplayPort Alt Mode video output.
Will it charge my laptop or tablet?
No. This model has no USB-C power-delivery pass-through input.
Can it connect an HDMI source to a USB-C monitor?
No. Signal direction is from a compatible USB-C source to an HDMI or VGA display.
What should I check if there is no picture?
Confirm DP Alt Mode support, use one output, select the correct display input, reseat the connections and test 1080p with another known-good cable.
Confirm the exact UGREEN model
Use SKU 30843 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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