I use LINUX Ubuntu/Kubuntu x86 and x64 as well as Windows x86/x64. I have a need to identify the chipset so I can find the proper drivers. I am sure that I am not alone in having this problem. I am unable to use the adapter in Linux. I am beginning to believe that I must request an RMA for this device. If it won't work in Linux on my laptop it is not much use to me. Even Madwifi does not support it.