Windows Vista Displayed an Unknown Device on Toshiba Tecra

By | February 27, 2009


After a clean install of Microsoft Windows Vista Ultimate SP1 (and subsequent Windows updates) on my Toshiba Tecra M4 tablet, I checked the device manager to see if Vista missed anything.  Only one yellow exclamation point was displayed.  I dug into the properties of the unknown device and it displayed the following information: unknown device – other device on Intel 82801 FBM LPC Interface Controller – 2641.  Doing a search on this information pointed to about half of the notebook devices made during the last few years – nothing useful.  I looked at the hardware ID of the unknown device and it displayed ACPI\IFX0101.  A search on that string produced results including an Infineon TPM (Trusted Platform Module), which I knew existed on my Tecra.  I browsed over to, downloaded the Trusted Platform Software, and no more unknown devices in the device manager.

Leave a Reply

Your email address will not be published. Required fields are marked *