Features: Convert your SATA or eSATA device to a portable external USB2.0 storage device. Supports 2.5/3.5 inch SATA or eSATA HDD, disc driver. USB2.0 port. Supports full speed USB2.0 transferring. Supports 1.5Gbps SATA I. No external power supply needed. Plug and play. Supported OS: Windows Me/2000/XP/Server2003/Vista, Linux OS, Mac OS 10 Full metal shielded eSATA connector reduces electromagnetic interfere and static effectively. Note: Due to HDD and motherboard limit, the fact transferring speed maybe lower than the theoretical 1.5Gbps. But still faster than IEEE1394, USB2.0 standard. Only one port (eSATA/SATA) available when using. What's in the box 1x Converter