If you're a wireless novice, you may find yourself in Router Wilderness. The instructions don't provide a step-by-step guide. You can't tell from the manual that when you set up security, you should be using an Ethernet connection. If you don't, you'll find yourself locked out -- in other words, you'll lose your Internet connectivity.
Moreover, the EasySecureSetup didn't work as described. In fact, the manual mentions it then leaves you hanging as what to do next, except watch the Cisco logo flash. The manual is merely a reference, not a user, guide.
The setup program on the CD isn't very helpful. That's because you have to use an online utility to do the actual setup.
Also, the signal strenth is inconsistent. I use Netfix's Instant Viewing a lot. Frequently, in the midst of watching a movie, the feed stops and is replaced by a notice saying that my connection speed has slowed and Netflix is trying to compensate. Because my PC is only 20 feet from the router, this is unacceptable.
The Cisco Web site has a user forum that is very helpful. If you post a question you're bound to get an answer within 36 hours.
Cisco needs to rewrite its documentation so that even a novice can set up the router without any slip-ups.
The manual for the USB Newtork Adapter with WI-FI Finder isn't much better. Because there is no correlation between the adapter and router manuals, you might think you were installing two totally unrelated products.
I made a living writing instruction manuals, and this isn't the way to do it.