This Buslink hard drive supports large capacity and USB 3.0/eSATA interface. The eSATA connection allow its use as an DVR Expander. The aluminum alloy casing supports efficient heat dissipation. This drive is perfect for your every day data storage and backup. Features Supports PC/Mac/DVR Self-powered, AC adapter included Transfer rate: USB 2.0: Up to 480 Mbits/s USB 3.0: Up to 5 Gbits/s eSATA: Up to 3.0 Gbits/s Drive: Drive: Pre-formatted NTFS SATA Drive (can be reformatted for Mac or Linux)