I have received a bug report suggestion USB WiFi Dongles are not supported - To confirm USB WiFi Dongles ARE supported, you will however first need to install the driver and reboot the receiver before it comes available for use - In the case of the Amiko WiFi Dongles the driver is available from the feeds (plugins) server, this will require a wired connection first time round so you are able to connect to the plugin server and download the driver but once installed WiFi can be used from then on - Tested with Amiko WLN-850, WLN-856 and WLN-850 adapters (all use the same chipset/driver)
In the case of installing the correct driver for all the Amiko WLN-850, WLN-856 and WLN-850 adapters you will need do the following (this assumes you have a wired connection for these steps):
Menu > Plugins > Download plugins (Green) > Drivers > network-usb-rt3070 > Yes
Once download is complete make sure your WiFi Dongle is plugged into the receiver and then reboot the receiver by Menu > Standby / Restart > Restart
When the receiver boots back up you will now be able to find both the wired and WiFi adapters available under the Network menu at:
Menu > Setup > System > Network
