Mobile broadband is a connection that allows you to use the internet while you are on-the-go. There are two variations of how you can use mobile brandband service. The first one is through your cellphone. The mobile provider will offer you data plans where you will pay per amount of downloads, rather than per minute like a telephone line would be. For example, a carrier can offer you 1GB, 5GB, 10GB of data.
The other method is to purchase what is commonly called a "dongle". This is a miniature modem that plugs into a USB socket. This is the best option if you would like to easily use your laptop everywhere at anytime without needing to connect to wireless internet. Anywhere you will be able to get a good signal (usually 3.5G or 4G), you will be able to travel with high-speed broadband.