Password encryption allows you to encrypt confidential information (all passwords, certificate private keys, hard disk authentication keys) stored in the printer. The encryption key for decrypting encrypted confidential information is stored in the TPM (Trusted Platform Module) chip. Since the TPM chip is not accessible from outside the printer, you can protect encrypted confidential information without sharing the encryption key.
If the TPM chip fails and the encryption key cannot be used, you cannot restore the confidential information in the printer and use the printer. Therefore, make sure to back up your encryption key to a USB memory.