OK, this is probably a dumb question, but does my X30 have a serial or USB interface?
I want to say it is serial because of all the connectors on the cable, but it does end in a USB.
The X5 came with both serial and USB connectors depending on the package, but the X30 only came with USB from the factory to my knowledge. It could be used with a USB to serial adapter. USB IS a serial interface, just a whole lot faster and with less pins.