code: async def async_set_port_poe_mode(self, port_idx, mode):
          
          no_existing_config = True
          for port_override in self.port_overrides:
              if port_idx == port_override['port_idx']:
                  port_override['poe_mode'] = mode
                  no_existing_config = False
                  break
  
          if no_existing_config:
              self.port_overrides.append({
                  'port_idx': port_idx,
                  'portconf_id': self.ports[port_idx].portconf_id,
                  'poe_mode': mode
              })
  
          url = 's/{site}/rest/device/' + self.id
          data = {'port_overrides': self.port_overrides}
  
          await self._request('put', url, json=data)
docs: Set port poe mode.
  
          Auto, 24v, passthrough, off.
          Make sure to not overwrite any existing configs.