Originally Posted by
Dodge DeBoulet
Good point (although they're identical in color, they have fairly obvious differences in look and wattage). I have one of each of those, too

No they don't - at least not any more. The current 25W unit looks exactly the same. The only way to tell the difference is that the 25W one only has 2 "power IQ" ports (labeled).
When the 40W came out it looked different from the 25W (at the time), but the new 25W version is, well, new.