Linksys Game Adapter
But also I found that the LinkSys Wireless Game Adapter was defective, meaning I've had to share my "good" wireless bridge that LinkSys no longer makes with my son's X-box. In looking at this "gaming adapter" that is "specially designed" for gaming consoles, I see now that it is nothing special at all. It appears to be a wonderful use for older chips that consume twice the power crammed into a designer case. I'm guessing that the heat so noticeable on the outside eventually cooked the insides.
The good news is that a plain old bridge runs the X-box just fine, and proivdes additional ports for when my son's friends bring their X-box's over for tandem play. In other words, keep it simple.