Just to sum it up.. it's a kit (which appears is official) that allows you to run Linux on your PS2. It comes with:
• Linux Kit (for PlayStation 2) release 1.0 software
• Monitor Cable Adaptor (for PlayStation 2) (with Audio Connectors)
• Internal Hard Disk Drive (40 GB) (for PlayStation 2)
• Network Adaptor (Ethernet) (for PlayStation 2) [10/100 Base-T]
• USB Keyboard (for PlayStation 2) & USB Mouse (for PlayStation 2)
Still think XBOX-Linux is cooler