Everything you do on a computer uses a specific amount of bandwidth, aka the amount of data that can be send in a specific amount of time. When they say you need more bandwidth it means you need to be able to send and receive more data then previously set.

Example 1 song = 1gb

your bandwidth is 60gb/month

you download 60 songs in a week which would be 60gb.

You want to download one more song you have no bandwidth left so you need 1 extra gb to download the last song.

Example 1 song = 1gb

your bandwidth is 60gb/month

you download 60 songs in a week which would be 60gb.

You want to download one more song you have no bandwidth left so you need 1 extra gb to download the last song.