You can use the SATDOCK4U3RE to skip bad sectors on a hard drive. For more information, visit the following FAQ: http://www.startech.com/ca/faq/hard_drive_duplicators_failing_drives.
To use the SATDOCK4U3RE to skip bad sectors, you need to enable Read Error Skip. By default, Read Error Skip is disabled.
To enable Read Error Skip, complete the following:
Turn on the SATDOCK4U3RE.
Press ENT four times to enable Duplicator mode.
Press ESC to open the menu.
Press UP to open the Advanced Setup menu.
Press ENT twice to open the ReadErr Skip menu.
Select Enable and then press ENT twice.
Wait a few seconds for the unit to exit the menu.