# open-drong-display: reconstructing Drong Display USB control

> open-drong-display replaces the Drong Display 1CBE:0003 dongle's Windows software with an IddCx display driver using a reconstructed USB protocol. The project documents bulk-transfer commands and session startup, then sends H.264 frames to the dongle for HDMI output.

- Type: Case study
- Targets: Binary · Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/Duoslow/open-drong-display>
- Primary source: <https://github.com/Duoslow/open-drong-display/blob/113feef32e2924d996f0de6c491c10d46c9f15bc/docs/PROTOCOL.md>
- Catalog page: <https://awesomerea.org/resources/open-drong-display-case/>
- Record JSON: <https://awesomerea.org/resources/open-drong-display-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/open-drong-display-case/index.md)

## Requirements & limits

- **Prerequisites:** Windows 10 2004 or newer or Windows 11, x64, and a Drong Display dongle with USB ID 1CBE:0003.
- **Prerequisites:** Building requires Visual Studio 2022 or newer with the C++ desktop workload and Windows Driver Kit 10.0.26100.
- **Testing evidence:** NVIDIA and Intel hardware encoding is untested; software encoding is available as a fallback.
- **License:** MIT license.

## Primary sources

1. <https://github.com/Duoslow/open-drong-display/blob/113feef32e2924d996f0de6c491c10d46c9f15bc/docs/PROTOCOL.md>
2. <https://github.com/Duoslow/open-drong-display/blob/113feef32e2924d996f0de6c491c10d46c9f15bc/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.