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Review of Linux Compatibility
The USB WiFi stick from LogiLink with the product ID WL-0049A has the USB ID 148f:3070
Bus 001 Device 005: ID 148f:3070 Ralink Technology, Corp.
The stick is fully supported by the Linux kernel module rt2870sta.
In case of Ubuntu 10.04 Draft-N connections are not supported. In this case the backport module has to be installed to achieve the full potential of the stick: http://wiki.ubuntuusers.de/WLAN/linux-backports-modules.
A simultaneous usage of the kernel modules rt2870sta and rt2x00usb can cause problems. If both modules are loaded can be tested in the following way:
rt2870sta 488948 0 rt2800usb 37372 0 rt2x00usb 11548 1 rt2800usb rt2x00lib 29788 2 rt2800usb,rt2x00usb
If both modules are show (as in the example above), both drivers have to be unloaded:
sudo modprobe -rf rt2800usb sudo modprobe -rf rt2870sta
and only the module rt2870sta should be loaded:
sudo modprobe rt2870sta
In order to prevent loading of both modules at next boot, the module rt2800usb has to added to the blacklist:
echo blacklist rt2800usb | sudo tee -a /etc/modprobe.d/blacklist.conf