Atto ESAS-R644-C00. Host interface: PCIe, Output interface: SATA. Data transfer rate: 9.6 Gbit/s. Power consumption (typical): 9.6 W. Colour of product: Green. Platform: PC, Form factor: Low Profile, Compatible operating systems: Windows Server 2003/2008/XP/Vista/7 Linux Mac OS X (10.4.x - 10.6.x)