According to Pentax, the interface is USB 1.1. This is a standard and
shouldn't need a Pentax branded cable. Try both cables on both
computers. If the new cable doesn't work on either and the Pentax
cable works on both, you've probably got a bad cable. Take it back
for an exchange.
I don't know about the D, but the DS uses a custom cable to allow interfacing both video output and USB 2.0 through the same port.
Godfrey
