Abstract: Examples described herein relate to during a boot of a power supply unit (PSU) connected to a computer platform, circuitry to receive a firmware identifier and manufacturer identifier associated with the PSU and determine whether the PSU is approved to utilize. In some examples, based on, at least, authentication of the firmware identifier and manufacturer identifier of the PSU, the circuitry is to permit access to data and/or power from the PSU. In some examples, based on, at least, failure to authenticate the firmware identifier or manufacturer identifier of the PSU, the circuitry is to deny access to data and/or power from the PSU.