def is_fpc(self):
        """True if the target is a Lenovo nextscale fan power controller
        """
        if self.has_imm or self.has_xcc:
            return None
        if self._fpc_variant is not None:
            return self._fpc_variant
        fpc_ids = ((19046, 32, 1063), (20301, 32, 462))
        smm_id = (19046, 32, 1180)
        currid = (self.oemid['manufacturer_id'], self.oemid['device_id'],
                  self.oemid['product_id'])
        if currid in fpc_ids:
            self._fpc_variant = 6
        elif currid == smm_id:
            self._fpc_variant = 2
        return self._fpc_variant
True if the target is a Lenovo nextscale fan power controller