nospam wrote, on Fri, 04 Dec 2015 14:35:19 -0500:

the maximum wattage only comes into play if you use *all* ports, which
you won't be.

what matters is the capabilities of each port, which should be about
10-12w.

This isn't even close to true based on the description of the part
on the package and on the web.

https://www.touchofmodern.com/sales/.../smart-adapter