Question
I am installing Windows 10 on C9Z890-MW, the Device Manager is showing an exclamation mark of the device " UCM-UCSId ACPI". How can I fix this issue?
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Answer
As the C9Z890-MW motherboard supports USCI 2.0, but the Windows 10 OS does not support it.
Starting in Windows 11, version 22H2 September Update, it supports USCI 2.0. 
We recommend using WIN 11_22H2 or a later version, the exclamation mark of the device " UCM-UCSI ACPI" does not appear. 
The same issue also appeared on C9B860-MW and C9Q870-M motherboards.

For more Microsoft’s public information about UCM-UCSI ACPI Device, please reference the Topic “USB” in the following link:
https://learn.microsoft.com/en-us/windows-hardware/drivers/driver-changes-for-windows-11-version-23h2

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FAQ ID:
41959
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Date Posted:
01/15/25
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