I was about to compose this question around the problem that my USB 2.0 ports had suddenly become USB 1.1 ports and solicit ideas on troubleshooting. Then I discovered that a reboot "cured" my problem!

To be specific: I have a laptop (Dell Inspiron 1420) with Win 7 ultimate that I have had for quite a while. I regularly transfer files via flash drive. Two days ago, for the first time I got a notification saying: "This device can perform faster if you connect it to a Hi-Speed USB 2.0 port." Checking device manager I observed 5 entries for "Universal Host Controller" and 2 entries for "Enhanced Host Controller". One of the latter group had a warning icon; looking at properties it said it was disabled because it was not functioning properly. I read one article that said I should start by checking BIOS settings so I needed to reboot. Though I did not really find in my BIOS what the article claimed should be there, it turns out the reboot was all I needed. Now device manager shows no warning and when I plug in my flash drive it no longer gives notice about using a slow port.

So---at the moment--I do not seem to have an issue but I was hoping someone might be able to shed light on why this would happen, is it likely to happen again, and how does one troubleshoot it?


Install the latest chipset drivers from Dell's website.

  • 1
    Perhaps you could include a link for the driver? – evan.bovie Jun 3 '11 at 16:19

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