NETGEAR SC101TNA Storage Central Turbo Storage Central Turbo is a flexible, upgradeable way to store digital information Insert one or two 3.5-inch SATA drives of any capacity to get started Functions just like a local disk drive; even assigns a new letter drive once added to your PC Advanced mirroring backup system and synchronization software protects against data loss Device measures 5.91 x 5.74 x 6.90 inches (WxHxD)