Wow, that’s a really simple hardware setup to supply your device with a 3G Internet connection. Better yet, the software side is just as simple thanks to the Vodafone USB Modem library for mbed.

A device that adds 3G or 4G (LTE) cellular connectivity to laptops, desktop computers and various tablets. Typically available as an external USB module, for desktop computers, the modem may also ...

The term states only that the connection to the computer is via USB but does not imply which network service is supported. It often refers to a 3G or 4G cellular modem, but it may also refer to an ...