Sony VGN-SR290JVB - Manual (Page 119)

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Customizing Your VAIO Computer
Using Trusted Platform Module (TPM)
Trusted Platform Module (TPM) is embedded in selected models and provides your computer with basic security functions.
In combination with the TPM, you can encrypt and decrypt your data to strengthen computer security against inappropriate
access.
TPMs are defined by Trusted Computing Group (TCG) and also called security chips.
See the online specifications to find out whether your model is equipped with the TPM.