The Desktop docking station allows users to connect two 2.5 inch SATA Hard Drive of up to 1TB to a High Speed USB 2.0. Features Compliant with Serial ATA II Electrical Specification 1.0 Compatible with all 9mm 2.5 inch SATA II Hard Drives up to 1TB. Compliant with USB 2.0 and 1.1 Specification Compliant with USB Mass Storage Class Complaint with SATA Transfer rates up to 3.0Gbps eSATA & Hi-Speed USB combo to dual SATA bridge application with RAID0 or RAID1 or JBOD function. External power supply provided Supports Plug & Play Supports USB2.0 Hot Plug feature Power ON/OFF Switch with LED indication Specification Supports Dual 9mm 2.5\ inch SATA/SATA II HDD Supports High Speed USB 2.0 Data Transfer up to 480 Mbps Supports SATA II transfer rates up to 3.0 Gbps Interface: Serial ATA USB 1.1 / 2.0 Supports SATA (Hot Plug) feature Compact size docking design 12V/2A Power Adapter Power and Operation LED Indication Requirements Windows 2000/XP/Vista Mac OS 10.x Available USB 2.0 Port or eSATA port