And a few bucks is all it would take. When you are buying an external interface you are paying for packaging and inventory costs along with maybe $2 worth of chips. To integrate this on the board for this charger would be worth the $2 to me. Well that and the engineering time up front might take a EE 1/2 a day.
Originally Posted by PeteB
There are quite a few extremely inexpensive (i.e., < $20) peripherals that do have USB support directly on them. There's really no reason not to put this directly on the charger except to save a few bucks.