Question about Acer Aspire 5100 Notebook
After Vista upgrade, there are two "Unknown Device" showing in the Device Manager under the USB section. The Properties describes them as USB controllers which are missing drivers. I have 3 USB ports, none of which currently work but did before the upgrade.
In addition, there are 3 ATI I/O Communications Processors; 2 USB 1.1 OHCI controllers and 1 USB 2.0 EHCI controller. All seem to be working fine.
There are also 3 USB Root Hubs which all seem to be working fine.
I am confused about what the two Unknown Devices actually are AND what I need to do to get the USB ports to work.
When posting driver issues, you need to specify what kind of equip you are dealing with, not just the issue. Most liekly you need to go to the manufacturs website of your motherboard or laptop and find vista drivers for it.
Posted on Jul 29, 2008
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Posted on Jan 02, 2017
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