TCG Opal is supported by Samsung NVMe™ SSDs (960EVO / PRO and newer). It is an authentication method that employs the protocol specified by the Trusted Computing Group (TCG) meaning that you will need to install TCG software supplied by a TCG OPAL software development company.
User authentication is done by pre-boot authentication provided by the software. For more detailed information and instructions, please contact a TCG software company. In addition, TCG/opal can only be enabled / disabled by using special security software.