My friend has an iMac G5 and the ethernet port is broken. It is model PowerMac8,1. We looked up the usb to ethernet adapter that Apple has now, e.g. http://www.amazon.com/Apple-MC704ZM-A-Ethernet-Adapter/dp/B00486070K/ref=pd_cp_pc_0 and it says that it is for Macbook Airs, though in the comments people have mentioned that it works for everything. He was about to get one but when I started researching myself, I see reports of people talking about how they only work on MBAs after a certain OS version (something about Apple locking them down with the ROM chip or something based on either intel architecture or OS version or model or something). Obviously this is a PPC chip model... Does anyone know if this adapter for sure would work with a G5? If not, any suggestions on what would?