the black impeller and orange impeller pumps you cannot switch back and forth, they are two separate pumps with different electronics.

The blue impellered pump is either 10W or 18W depending on whether the bridge is there, they both use the same circuitry otherwise. That one you can switch back and forth.

And BTW, the black impellered one is a 9W, orange is 18W. 10W is only for the blue impeller pump in the non-bridged connection mode, bridged is 18W.