The original goods arrived safely (for super low price) here. Since the Airport card in my old i G4 gives up the ghost and sometimes works and sometimes not again, I had ordered this stick. Research on the net brought the LCS-8131N3 as the only alternative for older Macs that already given here Customer opinions as well. Insert the CD, select the operating system, install software - works. If I the Fritz box would set the "Allow all new WLAN devices" still on before, it would have folded instantly .... Super part. Abwärtskompativel the old USB port on the iBook G4. Do what it will, and the wireless connection is more fluid than ever. Highly recommended!