LaCie 400 GB USB2.0&FIREWIRE 800&FIREWIRE 400 7200RPM 8MB D2 DESIGN. Hard drive capacity: 400 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: USB 2.0, FireWire 800. Weight: 2500 g. Compatibility: PC & Mac, Minimum system requirements: Intel Pentium II 350MHz-compatible or Apple G3 processor and greater; minimum 64MB RAM, Power requirements: External power supply (included)