Sunday, November 30, 2025

USB on SuperMicro

I thought I had good news, but I doubt it now.

Two identical Supermicro attached to two identical UPS from EATON, using the latest release of obsd, see the usb ups link randomly.

I just disabled usb3 and xhci hand-off from their bios, leaving ehci on. One machine now detects the ups, the other one does not.

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