So I am struggling to get a stable connection with my Airport Express in my Lounge such that I can play Air Tunes without cut-outs. So I decided I would add a SECOND AirPort Extreme to my network and get it to connect to my network with an ethernet cable nearer to the lounge then use it to extend the wireless network and then I could get the Lounge Airport express to connect to it instead of the main Extreme. So I ordered a "latest generation" Extreme from the refurb store - thinking it would be easy to add this to the network.............however........I am really struggling to get it to work!!!! I've noticed that my main Extreme (and indeed all of the Airport express units) say in the summary that they are "with 802.11n"..........whereas the refurb Extreme that I bought says in the summary that it is "Airport Extreme (Simultaneous Dual-Band II) - have I been sent an older generation unit.......or a more modern one?? I also note that it doesn't seem to allow the configuration of a WDS network in it's drop down menu's? Plus it is running version 7.5.1 whereas every other device is running 7.4.2 ??? Anybody got any ideas? Should I send it back and get them to send me a "with 802.11n" unit?? Thanks!!