For environments wanting to use USB one-touch to enterprise provision Intel vPro systems - here are some tips and pointers on supported USB keys and ensuring the USB key partitions are setup correctly.
A common error is the USB key partitions are incorrect - some USB key vendors\models have a hidden partition at the beginning of the USB key which breaks the raw I/O lookup used during USB provisioning. Other models differed in responses across OEM platforms. Plus - some OEM platforms disable USB provisioning in the system BIOS.
Take a look at the USB guidelines and associated findings located at http://communities.intel.com/docs/DOC-1247#USB2
In addition - take a look at the USB Key Provisioning Utility (UKPU) - http://communities.intel.com/docs/DOC-1171#TOOLS3
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