Hi jamichau,

The unknown device as per the Device ID is a USB 3.0 Root Hub. I suggest you to reinstall the Chipset and Intel USB 3.0 eXtensible Host Controller Drivers from the drivers download page.

Please let me know about your findings.

Thanks for the reply, Rajath.  I tried that this morning and rebooted, still had the unknown device.  Then, not expecting it to work, I went into the properties of the unknown device in device manager, clicked the Driver tab, and clicked the Update Driver button.  I then selected "Search automatically for update driver software".  Windows thought about it for awhile, then displayed a message that the driver had been updated and I have no Unknown Device anymore!  WooHooo!  Fixed!  I don't think I have ever seen the Update Driver button work before!  Nice, for a change.

Just for anyone else looking... I also had the "Unknown Device" listed in device manager but using Windows update did not find the driver.  The driver I needed was the "ST Microelectronics Free Fall Data Protection Driver" listed under "Chipset" category.

http://www.dell.com/support/drivers/us/en/555/DriverDetails/Product/latitude-e5530?driverId=XWJWG&osCode=W732&fileId=3175901375&languageCode=en&categoryId=CS

- Johnny

yup - that was the same one for me

wiped Ubuntu, put our Win 7 ent. on and ended up with 1 left