For everyone out there looking to switch to AT&T U-verse, I thought I would supply this handy tip. The first thing you’ll notice when you get the service is that the modem they provide has a built-in router. The router AT&T supplies are only 802.11 N 2.4 GHz. If you plan on streaming HD videos from a local file server or transferring large files via Wi-Fi then you will want to use your own router with the latest and fastest 802.11 ac Wi-Fi. Here’s how you can configure your own router to work with AT&T U-verse.