Overview: the external 2.5" Hard drive duplicator is a digital media revolution that conveniently copies 2.5" External hard drive and portable USB storage drives without a computer. No interruption as each channel can independently load, unload, and copy. This cleverly designed machine will allow the user to duplicate 2.5" External hard drive through the USB port. 1) High-speed copy support up to 2 GB/m per port (actual test). 2) Ergonomic design for easy operation 3) quick socket swap module 4) new built-in advanced multi-core processor 5) standalone system, no computer required 6) supports bit-for bit copy for USB/memory cards of all formats, data sizes and any capacity 7) provides DOD erase function to comply with USA department of defense (DOD) data security standard 8) four kinds of professional quality diagnostic tools for flash module 9) "a2 fake picker" shows the accurate capacity of a USB/memory card and quickly isolate of low quality or fake flash devices 10) "speed check" shows the reading and writing speed of the flash module within 8 seconds 11) "h3/h5 media check" shows the quantity of bad sectors through bit-for-bit examination 12) quick data copy, copies only data contained areas. (Support fat16/32/NTFS and Linux ext2/ext3/ext4) 13) 2 second format, 3 available selection modes 14) supports synchronous and asynchronous models for copy/compare/erase/format functions 15) strict bit-for-bit hardware comparison further increases the reliability of duplication 16) user-friendly interface with real-time information LCD display 17) firmware upgrade available with well-experienced team support. 18) External hard drive copy mode supported model: u-ub905s target: 1-4 operation: standalone support media: USB 3.0 Compatible, USB 2.0/1.0; 2.5" External hard drive led status: led (green/red) on each slot input: 4 push button language support: English, Japanese transfer speed : 2 GB/min system memory : 256mb ddr2.