Data encryption allows you to encrypt confidential information (passwords, encryption keys, data stored in the storage, backed-up fax data, audit logs, and other information) stored in the printer. The encryption key for decrypting 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. When the changing settings are applied to the printer, backed-up fax data and audit logs are erased.
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 device.