Aleratec 350117 1:3 HDD Copy Dock 4-Bay Duplicator/Dock with USB3.0 and eSATA Connectivity Sector-by-sector stand-alone hard disk drive cloning LCD screen and controls Supports both 2.5" and 3.5" SATA hard disk drives Sector-by-sector stand-alone hard disk drive cloning Four hard drive dock access via USB 3.0or eSATA cable (both included) LCD screen and controls Supports both 2.5" and 3.5" SATA hard disk drives Supports Windows 2000/XP/Vista/7, Mac OS10.3 or later, Linux