Basically, I'd like something than I could connect several devices to and get the speed of wired ethernet between the devices, and that connects to the internet via wifi.
Something like a typical wifi router, but that uses the wifi as the internet connection instead of an ADSL/Broadband wired connection.
I could presumably get the same effect with a WiFi to wired ethernet adapter and a separate wired ethernet hub/switch, but I was wondering if there are any combined units.
Dual band wifi is a requirement - it seems less prone to speed dropouts than 2.4Ghz band only wifi.