I bought this network drive from Amazon for use with a new Mac running Leopard. The IP Config routine that shipped with the disk was out of date and the newest version from LaCie could not connect to the disk via USB, direct (to computer) ethernet, or to an Air Port Extreme hub. Under Network, the drive was tagged as being connected via modem. Nor could it be connected using the Air Port disk Utility. Last, LaCie offers no path to uninstall the code created by their installer. LaCie on-line support folks tried hard to help, but after more than a week of back and forth, I gave up and returned the unit to Amazon. Thank you Amazon for no hassle returns.Short story: don't by this for a Mac running OS 10.5.1 until LaCie figures out Leopard and does a fix. This drive system was a a real disappointment from an otherwise good manufacturer.