Updated Ralink/Mediatek drivers for USB dongles released at 29/11/2013.
MAVERICKS AND YOSEMITE COMPATIBLE
Drivers downloaded from http://www.mediatek....7xrt537xrt5572/
I made a zip file with oficial drivers and a preference pane from dlink that replace the oficial ralink wireless utility.
This solve the problematic Ralink Wireless Utility that simply does not work on yosemite and the package doesn´t install the maverick kext in yosemite.
DLINK PREFERENCE PANE
Copy preference pane to \System\Library\PreferencePanes\
Copy kext for your MacOS version (use Maverick for Yosemite) to folder \System\Library\Extensions\
Rebuild kext cache