Iomega's DVR Expander Hard Drive adds 1TB of storage capacity to your eSATA-enabled Pace Americas Set Top Box or Scientific Atlanta Explorer digital video recorder so you can enjoy more TV and movies. Stores up to 600 hours of standard-definition TV or 120 hours of high-definition TV. Easy to use, the recording location is automatically managed by the DVR. This compact, sleek drive sits horizontally or vertically (in stand) and quietly complements your home theatre experience. The DVR Expander is powered by an Energy Star qualified adapter for a better environment.