Connect and drive multiple displays over USB using DisplayLink® technology.

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DisplayLink Direct is an SDK that lets applications render content directly to DisplayLink-connected displays. DisplayLink (developed by Synaptics) encodes and transmits video over standard data buses, such as USB 2.0 and USB 3.x, without relying on native video pass-through such as DisplayPort Alt Mode or Thunderbolt.

The SDK provides C/C++ headers and language bindings so you can integrate multi-display output into your own applications.

• Drive multiple displays over a single USB connection.
• Use the C/C++ API or Python bindings.
• Render Qt applications to DisplayLink displays with the Qt platform plugin.
• Get started with ready-to-run samples, including a video wall and EDID reader.
• Deploy without host-side drivers or compositor integration, making the SDK suitable for embedded systems and other use cases that need a lightweight solution.
• Configure and integrate multi-display output quickly with the simple, easy-to-use API.

Full documentation is hosted at:

It covers installation, requirements, API reference, code samples, and troubleshooting. To build and preview the docs locally:

python3 -m venv .venv && source .venv/bin/activate
pip install -r docs/requirements.txt
./docs/serve.sh

For instructions specific to each area, see:

• samples/README.md for instructions on building and running the sample applications.
• libs/README.md for core library package details and dependencies.
• firmware/README.md for firmware update workflow and assets.

The core libraries are proprietary and closed source, distributed as pre-built binaries via GitHub Release Assets. See LICENSE for terms and NOTICE for third-party notices.

Contributions to the documentation and samples are welcome — see CONTRIBUTING.md for details.

To report a security vulnerability, please follow the process described in SECURITY.md.