# Page Not Found

The URL `expansion-hub/updating-expansion-hub` does not exist.

You might be looking for one of these pages:
- [Expansion Hub](https://docs.revrobotics.com/rev-hardware-client/duo/expansion-hub.md)
- [Updating a Pneumatic Hub](https://docs.revrobotics.com/rev-hardware-client/ion/pneumatic-hub/updating-a-pneumatic-hub.md)
- [Updating a Power Distribution Hub](https://docs.revrobotics.com/rev-hardware-client/ion/power-distribution-hub/updating-a-power-distribution-hub.md)
- [Pneumatic Hub](https://docs.revrobotics.com/rev-hardware-client/ion/pneumatic-hub.md)
- [Power Distribution Hub](https://docs.revrobotics.com/rev-hardware-client/ion/power-distribution-hub.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.revrobotics.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.revrobotics.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/rev-hardware-client/duo/expansion-hub.md`)
- Use `Accept: text/markdown` header for content negotiation