This is a small, pocket sized drive. Simple plug and play usb device, no ac adapter required.
Ability to store 160Gb of data elsewhere or to use as storage for system backups.
I reformated the drive to NTFS due to the 3-4 Gb file size restriction of Fat file system(comes formated FAT).
I primarily use it to store copies of cd's or dvd's.
Good little drive, no issues or data loss/corruption.