Sonnet Tempo SATA 6Gb Pro ExpressCard/34. Host interface: ExpressCard, Output interface: eSATA. Data transfer rate: 6 Gbit/s, Transfer rate: 375 MB/s. Colour of product: Grey. Connectivity technology: Wired, Supported data transfer rates: 6Gb/s, 3Gb/s, 1.5Gb/s, Compatible operating systems: Mac OS X 10.5+ Windows 8/7/Vista