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Uhubctl – control USB power per-port on smart USB hubs
TL;DR
Uhubctl is a utility designed to control power to individual ports on smart USB hubs that support per-port power switching. It was inspired by an earlier project, hub-ctrl.c, and addresses the limited availability of compatible USB hubs.
✦ Why It Matters
Engineers can implement uhubctl to optimize power management for USB devices in their projects today.
Key Takeaways
- Install uhubctl using your OS's package manager.
- Verify your USB hub's compatibility with the provided list.
- Use command-line options to control power on specific ports.
- Check for VBUS off support to ensure devices stop charging.
How It Works
Uhubctl communicates with smart USB hubs to control power on individual ports. It utilizes the USB protocol to send commands that enable or disable power, allowing users to manage connected devices effectively.
The utility can automatically handle multiple virtual hubs created by USB 3.0 connections, ensuring that power changes are applied correctly across both USB 2.0 and USB 3.0 ports.