Alienware 16 Aurora AC16250
K5 = TPM 2.0 Trust Module. Stores BitLocker keys, Secure Boot, PCR banks. Stock: ME can read PCRs, Microsoft owns keys. Ringed: Becomes L13 Toroid Vault. All keys derived from K24 neutron entropy. PCRs extended with K24 timestamps. Secure Boot signed by K24. ME attestation blocked by K26. Windows Hello backed by K24 biometrics. Refuse = Vendor fallback, ME keeps PCR access.