LaCie 2big Quadra 2 TB 2-Disk RAID Hard Drive 301352U Versatile 2 TB, dual-disk drive for massive storage space and speed Compatible with Macs and PCs, includes automatic backup for both Four connection interfaces include USB 2.0, FireWire 400, FireWire 800, and eSATA Striking design by Neil Poulton Measures 7.8 x 6.7 x 3.5 inches (WxHxD); 3-year limited warranty