Cavalry Storage CADA-C32A Series 1 TB USB/Firewire 400 & 800 Mac-Ready 2-bay RAID Personal Disk Array CADA001C32A USB 2.0 (USB 1.1 backwards compatible), FireWire 800 (2), FireWire 400 interface (unit supports daisy chaining) Plug and play for Mac OS 9.x or newer (pre-formatted to Mac OS X Extended), preconfigured to RAID 1 (mirrored, total usable capacity is halved in RAID 1) Oxford Semiconductor chipset guarantees cross platform USB 2.0 compatibility 1-Year manufacturer's warranty, two 500GB 3.5-inch hard drives installed in a dual bay enclosure with built-in fan, USB cable, FireWire 1394b 9-pin to 9-pin cable, FireWire 1394a 6-pin to 6-pin cable, AC adapter, Resources CD and Quick Start Guide System Requirements - Available USB port or FireWire 400/800 port, Mac OS 9.x or newer, Windows 98SE/Me/2000/XP/Vista