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I have a USB 3.0 ready computer / linux install and i just purchased a USB 3.0 External Hard Drive Enclosure to be used with my sata 2.0 hard drive. ...
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- 10-31-2012 #1
- Join Date
- Apr 2012
USB 3.0 External Hard Drive Enclosures
My first thought was the enclosure is backwards compatible with 2.0 and several other devices plugged into my USB 3.0 were USB 2.0 devices so i cleared out everything and put them on what i thought was a USB 2.0 hub and i disabled legacy support in bios. However that did not change anything. After further examination i found out that all my devices are shown in a device manager to be plugged into 2 usb root hubs both EHCI controllers and named USB 1 and 2 even thought the individual ports link up to 3.0 ready hubs. I do not know why that is. But checked my sys directory for usb devices and it showed 6 root hubs USB 1 , 2, 3 ,4 ,5 ,6 respectfully with USB 4 and 6 running at 5.0gb/s however in my device manager USB 3, 4 ,5 ,6 are all labelled and detected as PCI Bridges instead of XHCI and EHCI controller hubs.
Why would that occur and do i have something misconfiguration
? Why are my USB 3.0 ports being routed for lack of a better word to a root EHCI controlled USB 2,0 hub