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How many irqs are needed for a usb hub with 3 devices?

Anonymous

∙ 12y ago

Updated: 11/9/2022

One. A USB hub is plugged in via a USB port, that port only uses 1 IRQ. So all devices on the hub use the same IRQ. You could have a hub with 10 ports still using 1 IRQ.

Wiki User

∙ 12y ago

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