Sorry, just found Rudolf's message in openamt-devel archive -he's surely aware of openamt.org HECI driver. So docs are the question... I think one should sign NDA to get them from Intel: http://softwarecommunity.intel.com/articles/eng/1154.htm Intel(r) Active Management Technology Software Development Kit (SDK) User Guide The Intel(r) Active Management Technology (Intel(r) AMT) Software Development Kit (SDK) provides the necessary documentation; APIs and libraries to utilize Intel AMT features; and an emulator that simulates Intel AMT enabled hardware (Refer to the Intel AMT Emulator Guide for additional information). This SDK is distributed as a part of the Intel(r) Early Access Program (Intel(r) EAP) and is not publicly available. The Intel AMT SDK is part of a targeted manageability program from Intel and is provided for use only under a Non-Disclosure Agreement (NDA) with Intel Corporation. [...] Alas, the docs don't seem to be publicly available... - Dmitry Bely
