Received a serial cable purchase from eBay. However, still can′t connect the Newton and G4. The problem is with the USB converter. The converter only accepts a six-pin cable. Currently this converter, USBi by Wasp Bar Code MT606-3, is used to connect a bar code reader to a USB port. Never took the time to count the number of plug pins. Just noted the device cables looked alike. dumb!
Have downloaded and installed NewTen and NewtSync on the G4. Just need to acquire the appropriate serial adapter and Mac OS X dev driver. Then figure out how to actually connect, and move applications and data to the Newton.
Once data is synced the HP Jornada and Handspring go up for sale at eBay. Going total Message Pad 2100.
Ramblings of an old computer engineer/developer 