LSI SAS 9211-4i. Host interface: PCIe. Data transfer rate: 48000 Mbit/s. Power supply type: +12V ±10%, Power consumption (typical): 13.5 W. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -45 - 105 °C, Operating relative humidity range: 5 - 90 %. Connectivity technology: Wired, Form factor: 6.6" x 2.713" (MD2 Low-Profile), Compatible operating systems: Microsoft Win Server 2003/2008/Vista/XP/7 Linux