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QEMU/KVM USB HUB

Slo2025
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Because your USB hub is designed this way, at least firmware-wise

Yes, I had an account here before. Do not ask me about something related to current political events in the part of the planet I live in - I wouldn't answer that for my own sake and safety. Feel free to address me with any other kind of questions.

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Posted
On 11/3/2025 at 4:11 AM, Slo2025 said:

Why i have two USB HUB's in USB Host Device in QEMU/KVM? I have only one USB HUB.

 

2025-11-03_040914.png

 

I believe that - just like on MacOS - the kernel sees a USB 3.0 port as two separate ports.

In your list "High-speed" means USB 2.0, and "SuperSpeed" means 3.0.
USB 2.0 and USB 3.0 use different signaling buses and different controllers, even though they share the same physical ports.

While libvirt and by extension QEMU see the ports as separate, I believe it's also that - as @Eviljuche said - that the port is built to report more clearly both digital USB ports.

Profile picture by u/LostMediaLover1234 "PixelZyxel" on Reddit.

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