USB 3.0 to eSATA External SATA 3Gbps Convertor Adapter for 2.5" 3.5" Hard Disk Transfer rate of super-speed USB 3.0 interface can be up to 3Gb/sec (Max). Chip: JM539. Supports -swapping and plug and play function. Compliance with serial ATA specification revision 2.6. No driver installation required for WindowsXP/Vista/7.