This USB adapter allows you to join a wireless network in your house, whether that network is in 802.11b, 802.11a, 802.11g, or 802.11ac format. So, your Internet service provider doesn't matter.
Once the Internet comes into your house, usually via a cable modem (Cox, Comcast, etc) or fiber optic modem (Verizon FiOS) for example, then the signal would then need to connect to a wireless router, via an Ethernet cable. Then, it's the wireless router which sends out the signal (in one of the formats I listed above), which this USB adapter can connect to, wirelessly. See the diagram I've attached.
Hope this helps.
- Nate