Hi, I have this TP-Link WDN4800 PCIe card since yesterday, and it is working very nicely. The only major drawback is that I loose the wifi connection after I wake Lion from sleep. It does not seem to find any networks at all. The only thing that helps is rebooting the system. Disable/Enable or remove/add the device in NetPrefs does not seem to work. Some people on the official Apple forums report problems with Filevault, but I have never used it, or activated it, so that could not be the problem. I am running 10.7.4 with a patched AppleRTC.kext and using the Lnx2mac drivers in version 0.0.9 for my ethernet (to make the appstore.app work). Maybe someone can help find a solution.