22.214.171.12468 is not a model number, it's a driver version number. Sigmatel model numbers usually begin with STACxxxx.
Sigmatel doesn't offer support to end users. Support must come from the vendor who used the Sigmatel chipset in making the pc or motherboard. If you want us to help, please identify the pc system and/or the retail motherboard this device came integrated in.
note: a large user of Sigmatel chipsets is Dell but if your pc is a Dell, we need to know 2 things:
1: is it in a desktop or notebook?
2: The Dell pc model number?