There were no PowerBooks made that had both ADB and USB from the factory (the only Mac that can claim that honour is the Blue and White G3). However, you can add a USB CardBus card to a Wallstreet PowerBook G3 (which has serial, ADB, SCSI, but no built in USB or FireWire). Alternatively, you can buy a Griffin iMate (USB -> ADB adaptor) and use it on any USB Mac.