product synopsis the bi-digital partner of otg (on-the-go) is an ideal portable storage solution for directly copying /saving/ exchanging/ deleting files form any usb device without a computer. you can select folders and files to backup or exchange with other persons by direct connection with digital camera/video, psp, pmp, pda, flash drivers, mp3/mp4 player, usb mobile hard disk, cell phone or any other usb portable devices. at the same time, it is also functions as a standard high speed usb 2.0 hard drive enclosure. the functions include data protection, smart data backup, information management and friendly user interface with lcd display.