Iomega's DVR Expander Drive adds up to 500GB of storage capacity to your Scientific Atlanta Explorer eSATA enabled digital video recorder (DVR) so you can enjoy more TV and movies! Stores up to 300 hours of standard-definition TV or 60 hours of high-definition TV. Super easy to use - recording location is automatically managed by the DVR. This compact, sleek drive sits vertically in stand and quietly complements your home theatre experience. Check with your local cable service provider to confirm service compatibility.