[ubuntu] any USB wireless card can work as AP under ubuntu?

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http://ubuntuforums.org – I know some wireless card can work in Master Mode but it seems use madwifi driver. I know madwifi doesn't support usb dongles I hope to find a usb wireless card which can work as AP under Ubuntu. any one have suggestion? Thanks a lot for help. I have check this list http://atheros.rapla.net/ I am not sure if ar9170usb.ko and its device support Master MOde. (HowTos)