COMPLETE STANDALONE: No computer or software needed WARRANTY: 1 year parts, 3 years labor, lifetime technical support ASYNCHRONOUS MODE: Duplication from master source port to blank target ports starts as soon as a source drive/device is inserted and a target drive/device is plugged into any target port BIT-BY-BIT DUPLICATION: Performs a bit-by-bit copy from the USB-powered portable external source hard drive or USB flash drive DUPLICATE USB FLASH DRIVE TO USB FLASH DRIVE: Copy from 1 single USB flash drive to USB flash drive(s) DUPLICATE USB FLASH DRIVE TO USB-POWERED EXTERNAL HARD DRIVE: Copy from 1 single USB flash drive to USB-powered portable external hard drive(s) DUPLICATE USB-POWERED EXTERNAL HARD DRIVE TO USB-POWERED EXTERNAL HARD DRIVE: Copy from 1 single USB-powered portable external hard drive to USB-powered portable external hard drive(s) DUPLICATE USB-POWERED EXTERNAL HARD DRIVE TO USB FLASH DRIVE: Copy from 1 single USB-powered portable external hard drive to USB