Product details:

The GoFlex ultra-portable drive makes it easy to store, automatically and continuous backup and encrypt all your files with its preloaded software and plug-and-play USB 2.0 connectivity. But this is no ordinary external drive. As the core of the GoFlex Storage System, the GoFlex ultra-portable drive is the world's most upgradeable external drive allowing it to deliver a truly customizable experience.

Hard Drive Capacity:500 GB
Internal/External:External
Brand:Seagate
Assembled Product Dimensions (L x W x H):5.00 x 3.20 x 0.60 Inches