Edit: I am running the card through ndiswrapper with the rt2870 drivers and forced it with option -a and supplying the devid for the usb card.
Something that you might wanna try is not using the usb cable and holder that the actual usb adapter comes with; I think that may have caused some major problems.
I am now using the card just fine by (as I just said) using the ndiswrapper -a option and removing the usb cable.
Edit: I am running the card through ndiswrapper with the rt2870 drivers and forced it with option -a and supplying the devid for the usb card.
Something that you might wanna try is not using the usb cable and holder that the actual usb adapter comes with; I think that may have caused some major problems.
I am now using the card just fine by (as I just said) using the ndiswrapper -a option and removing the usb cable.