TPM

A Trusted Platform Module (TPM) is a that handles security operations such as encryption and decryption in hardware to reduce the likelihood of  or a.

Usage in Power Macs
Early TPMs were used by Apple in PowerPC-based Power Mac G4 and G5 models to allow Mac OS X to load securely on official hardware. Apple used this for its digital rights management (DRM) and Mac OS X licensing as it is soldered onto the motherboard to be registered to that particular machine. The Hackintosh community is critical of this technology as it is closed for the sake of security, and seeks to circumvent these measures to run Mac OS X or macOS on unsupported hardware.

Usage in Window PCs
These modules have been adopted by PC hardware developers, such as Dell, Intel, HP, and AMD for platform security, and have become a requirement for running recent versions of Microsoft Windows.
 * Windows 10 requires TPM 1.2 or later
 * Windows 11 requires TPM 2.0 or later