For the user who doesn't have a computer with a USB connection or the USB connection is occupied, the serial cable will allow for syncing and transfering files just as the docking station does.

Model Name: CE-170TS Weight: Approx. 65g Features: • Cable length: 1500mm • The cable for RS-232C port of    PC for non USB-port PC • Connect to the rear panel port    of the Docking station