* fTPM is a Firmware based TPM 2.0 implementation.
* Intel® PTT is an integrated solution in the Intel® Management Engine.
* fitlet2 is based on Intel Apollo Lake SoC, featuring Firmware TPM as part of Intel® Platform Trust Technology (Intel® PTT)** The platform supports Microsoft requirements for firmware Trusted Platform Module 2.0 (fTPM). Specifically it supports credential storage and key management as used by Windows 8 and Windows® 10.
** Intel® PTT supports BitLocker for hard drive encryption.
For more information please refer to - [https://www.intel.com/content/www/us/en/support/articles/000007452/mini-pcs.html Intel TPM information]