I'd be happy to help you with your request!

It seems like you're looking for information on how to install a specific software, USB Device Tree Viewer 3.8.9. I've extracted the relevant information from the text:

* The software can be downloaded from the Software category.

* It's available as an HTTP download at fast speeds.

* A previous version, USB Device Tree Viewer 3.8.3.91, is also mentioned.

If you'd like to proceed with installing the software, I can provide some general steps:

1. Go to the website where you downloaded the software and locate the installer file (likely a .exe or .msi file).

2. Run the installer file by double-clicking it.

3. Follow the installation prompts to install the software on your computer.

If you have any issues with the installation process, feel free to ask, and I'll do my best to assist you!

Additionally, if you're interested in learning more about the features of USB Device Tree Viewer 3.8.9 or its capabilities, I can summarize some points from the text:

* It allows you to extract information on devices connected to your computer.

* It provides a tree view of actual position inside the menu structure.

* It's designed to provide fast access to information concerning USB host controllers and devices.

Let me know if there's anything else I can help you with!

Instal USB Device Tree Viewer 3.8.9