Kensington VU4000 Review 2026 - USB 3.0 to HDMI 4K Adapter

Name: Kensington VU4000 USB 3.0 to HDMI 4K Video Adapter (K33988WW)
Brand: Kensington
SKU: K33988WW

The Kensington VU4000 (model K33988WW) is a USB 3.0 to HDMI display adapter that adds a single 4K external monitor output to any laptop or desktop with a USB-A 3.0 port. It uses a DisplayLink chip to encode video in software, which means the adapter works independently of your GPU or video card. Plug it into any USB 3.0 port, install the DisplayLink driver, and you get an HDMI port capable of outputting up to 3840x2160 at 30Hz. That top resolution makes the VU4000 one of the more capable single-port USB display adapters from the time of its release, when most competitors topped out at 1080p or 1440p. The adapter connects via a short USB 3.0 cable and outputs to a standard HDMI female port, so any monitor cable with an HDMI male connector plugs straight in. It supports both extend and mirror display modes, letting you either expand your desktop to a second screen or duplicate your laptop display on a larger monitor or projector. Kensington rates it compatible with Windows 10, 8.1, 8, and 7 and notes backward compatibility with 1080p displays. Because it relies on DisplayLink software rendering, the adapter draws its power entirely from the USB 3.0 bus and requires no external power supply. The primary audience is Windows users in corporate or enterprise environments who need to add a single 4K-capable output to a laptop without upgrading hardware or using Thunderbolt.

Pros & Cons

What We Like

Adds 4K (3840x2160) output to any laptop with a USB 3.0 port, no GPU upgrade needed
Bus-powered through USB - no external power supply required
Backward compatible with 1080p and 1440p displays
Supports both extend and mirror display modes
Plug-and-play driver auto-install on Windows 10

What Could Be Better

4K output is limited to 30Hz, not suitable for video or motion-heavy content
Workaround: Use at 1920x1080@60Hz or 2560x1440@60Hz for video content, where DisplayLink compression is less visible.
macOS not supported
Workaround: Mac users should look for newer USB-C or Thunderbolt-based adapters with DisplayLink support and official macOS compatibility.
Older product released in 2015 - newer competitors offer 4K@60Hz
DisplayLink compression causes artifacts on fast-moving video or animation
Workaround: Lower the resolution to 1080p or 1440p when watching video, or use a native GPU output for media consumption.

Display Support

Max Displays: 1

1 display (Single 4K output at 3840x2160@30Hz via HDMI. Backward compatible with 1920x1080 and 2560x1440 displays.)

3840x2160 @ 30Hz

Ports & Connectivity

Video Outputs

1x HDMI

Full Specifications

General
Manufacturer	Kensington
Model	K33988WW
Release Date	2015-09
MSRP	$119.99
Connectivity
Host Connection	USB-A
Max Data Rate	5 Gbps
Driver Required	DisplayLink
Display Output
Max Displays	1
1x Display	3840x2160 @ 30Hz (Single 4K output at 3840x2160@30Hz via HDMI. Backward compatible with 1920x1080 and 2560x1440 displays.)
Ports (1+ total)
HDMI	1x
Power
Power Input	USB-A

Compatibility

Windows (7+)

Full support on Windows 7, 8, 8.1, and 10 with DisplayLink driver installed. Extend and mirror modes supported. USB 3.0 port required for 4K output; USB 2.0 ports are not sufficient.

Known Issues

macOS

Not officially supported

USB 2.0 hosts

Insufficient bandwidth for 4K

6.5 /10

Our Verdict

Good

The Kensington VU4000 delivers on its core promise of adding a 4K external monitor to a USB 3.0 port. On Windows 10, setup is straightforward: download and run the DisplayLink driver installer, plug in the adapter, and the monitor appears within a few seconds. The 4K output at 30Hz is crisp for documents, spreadsheets, and web browsing, which is the right use case for this adapter. DisplayLink at 30Hz is not ideal for video playback or any motion-heavy work, and users who intend to watch video on the connected display will notice compression artifacts and frame lag. That is an inherent limitation of DisplayLink at 4K over USB 3.0 bandwidth. At 1080p or 1440p the DisplayLink compression is much less noticeable and the adapter handles office workloads well. macOS is not listed in Kensington's compatibility spec for this model, and the VU4000 predates the Apple Silicon era, so Mac users should look elsewhere. On Windows, the driver installs without issues and the adapter has good long-term stability. It does not run hot and requires no external power. The main drawback is that the product dates from 2015, and at its MSRP it faces competition from newer DisplayLink and Silicon Motion adapters that offer 4K at 60Hz over USB-C or USB 3.0. If you need a straightforward Windows-compatible USB-A to HDMI 4K adapter for an office or conference room deployment, the VU4000 still works correctly. For home users or anyone needing better performance at 4K, newer alternatives are worth considering.

Frequently Asked Questions

Does the Kensington VU4000 support 4K resolution?

Yes, the Kensington VU4000 outputs up to 3840x2160 (4K Ultra HD) at 30Hz via HDMI. It is also backward compatible with 1920x1080 and 2560x1440 displays. The 30Hz refresh rate is a limitation of DisplayLink encoding over USB 3.0 bandwidth at 4K.

Does the VU4000 work with Mac?

Kensington does not officially list macOS as a supported operating system for the VU4000. The adapter is rated for Windows 7, 8, 8.1, and 10 only. Mac users looking for a USB 3.0 to HDMI adapter should look for models with explicit macOS and DisplayLink Manager support.

Does the VU4000 require an external power supply?

No. The VU4000 is bus-powered through the USB 3.0 connection. It draws power directly from the USB port on your laptop or desktop and does not require a separate power adapter.

Can I use the VU4000 on a USB 2.0 port?

No. The VU4000 requires a USB 3.0 port. USB 2.0 does not provide enough bandwidth for the DisplayLink 4K video encoding the adapter uses. The adapter will not output 4K, and may not output any resolution reliably, when connected to a USB 2.0 port.

Does the VU4000 require drivers?

Yes, the DisplayLink driver must be installed for the adapter to function. On Windows 10 and later, the driver may auto-install via Windows Update when you first connect the adapter. For a clean install or if auto-download fails, download the latest DisplayLink driver from synaptics.com.