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.