Zyxel's documentation links to a page on the company's Website showing , and my unit came with some U.S. carrier-specific setup tips. You do have to activate your USB modem before using it with the MWR211.

One major disappointment: Battery life isn't terrific. Zyxel says the fully charged MWR211 will run for about 2 hours when connected and in use, or 4 hours on standby, and in my tests, those numbers seemed a tad (but not wildly) optimistic. I'd recommend trying to keep the AC adapter connected when possible.

But overall, I was impressed with the MWR211 as a tool for frequent travelers. Being able to use different USB modems to connect a Wi-Fi hotspot means you should be able to use it in more places, and also save money, especially when traveling overseas. A little added bulk (over the MiFi) is a small price to play for those benefits.