# Page Not Found

The URL `hardware/cameras/usb-cameras/v120-duo` does not exist.

You might be looking for one of these pages:
- [Slim 3U](https://docs.optitrack.com/v3.0/hardware/cameras/usb-cameras/slim-3u.md)
- [Duo 3](https://docs.optitrack.com/v3.0/hardware/cameras/usb-cameras/duo-3.md)
- [USB Cameras](https://docs.optitrack.com/v3.0/hardware/cameras/usb-cameras.md)
- [Flex 13](https://docs.optitrack.com/v3.0/hardware/cameras/usb-cameras/flex-13.md)
- [Flex 3](https://docs.optitrack.com/v3.0/hardware/cameras/usb-cameras/flex-3.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/v3.0/hardware/cameras/usb-cameras/slim-3u.md`)
- Use `Accept: text/markdown` header for content negotiation