This past week Realtek announced driver support for the Realtek RTL8187L chipset has been discontinued, meaning that devices which are based on this chipset may no longer be compatible with future Windows or Mac operating system releases or updates. It also means that there will be no further bug fixes released.
This affects the Alfa AWUS036H, Alfa UBDo-gt8, RokAir, and any other Wi-Fi adapter that uses this chipset. Windows users most likely won’t be affected until the next major release of Windows. Mac users running 10.6 may be affected now. Earlier this month we posted about Mac OS compatibility of this chipset, explaining it worked with Snow Leopard 10.6 Macs booting a 32-bit kernel but not those booting a 64-bit kernel. It appears because of this EOL announcement that Realtek RTL8187L-based devices will not be supported on 64-bit kernel Macs going forward unless a 3rd-party workaround is developed (the latter is not unheard of, but it can take some time).
Snow Leopard users booting a 64-bit kernel should consider the Alfa AWUS036NH or the Rokland n3. Note that currently the AWUS036NH model is not compatible with 64-bit kernel Macs out of the box and drivers will need to be downloaded. The Rokland n3 is compatible with 64-bit kernel Macs right out of the box.