Can I use the network adaptor and hard drive I got with my PS2 Linux Kit to play games online?
Currently, it looks like the answer is “yes and no.” That is, yes, you can use the network adaptor, but no, you can’t use the hard drive. A hard drive with PS2 Linux installed on it cannot be used with any commercially-released PS2 games, online or otherwise, so you won’t be able to install Final Fantasy XI unless you buy another hard drive and swap it in. However, the Linux Kit’s network adaptor should work with American PS2 games, even though it isn’t quite the same piece of hardware as the regular American network adaptor.