01-13-2012 11:14 AM
By any chance are you using the same SSID for both 5GHz and 2.4GHz? Try changing one if you are. My understanding is that many dual band client devices will ignore the 5GHz and take the 2.4GHz connection in this case.
I have an E4200v2 and both slim 360 (internal) and an older 360 with the external adapter. I'll check it out tonight and post back my results.
01-13-2012 11:19 AM
No both SSIDS are set to a different name. even tried turning of the 2.5 ghz radio Cant for the life of me get this to connect on 5ghz. . The XBOX slim does connect to other wireless n routers on the 5 ghz radio, so I am almost sure its the cisco software. people are having sucess in this thread but not with the e4200. I hate to have to return it. I use cisco gear at work flawlessly and with lots of support. They wont return calls regarding this issue they seem to ignore everyone raising a ticket..
01-13-2012 11:21 AM
ohter people are using the new xbox slim and having no problems connecting to other types of wireless n 5ghz routers so now I am really confused..
01-13-2012 11:42 AM
The xbox 360 Slim can only do 2.4 Ghz only, no 5 Ghz... No one on this planet can connect on 5 Ghz with the internal N adapter of the XBox360 Slim. You will need an external 5Ghz N adapter to do this. I have a xbox360 Slim and the external 5 Ghz N adapter, without the adapter you only can get 2.4Ghz. It is also Stated on Microsoft Website. Xbox Slim 2.4 Ghz only....
01-13-2012 11:56 AM
Watch out...there are fake Xbox 360 external adapters around. I know because I bought one on ebay. The counterfeiter even had a fake holographic Microsoft sticker on it. Only after I purchased a real one did I notice the differences. One clue was the Serial Number, others were the "non-Holographic" Hologram and the texture of the plastic. The biggest clue was the dismal network compatibility. I hope you don't have one of those...