The 4 TB 2big Thunderbolt Series Hard Drive by LaCie delivers remarkable transfer speeds up to 327 MB/s and features RAID security, hot-swappable disks and the ability to daisy chain up to six devices. With its stylish solid-aluminum case, advanced cooling system and ultra-quiet operation the 2big Thunderbolt is ideal for professionals in most any industry and environment. The included drive stand allows it to sit vertically or it can be stacked horizontally.