def METHOD_NAME(self):
    """
    Retrieves the presence of the Power Supply Unit (PSU)
    Returns:
        bool: True if PSU is present, False if not
    """
    status = False
    psu_presence = self._get_pmc_register(self.psu_presence_reg)
    if (psu_presence != 'ERR'):
        psu_presence = int(psu_presence, 16)
        # Checking whether bit 0 is not set
        if (~psu_presence & 0b1):
            status = True
    return status