MY wirless router is on the 2nd floor of my house, while my 360 is in the basement. So my signal is going through two floors and a concret wall and I still have a stong connection.
Installation is easy all you have to do is plug it in on the back of the 360.
[quote name='VipFREAK']Wait is this the adapter for the PC? You can connect it to the 360? What for?[/QUOTE]
You connect it to the 360, so that the 360 can access a wireless LAN, thusly eliminating the need to run a ethernet cable to the 360.