4 Port SATA II Multilane Controller, RAID, Low Profile Option, PCI Express x 8

Bus Type: PCI Express x8 (8 Lane)
Connects up to 4 external SATA II devices
Also compatible with 1.5Gbps SATA 1.0a drives
Speed: Up to 3Gbps for each channel
Port Multiplier and NCQ (Native Command Queuing) support
Supports RAID levels 0,1, 0+1, 5 and JBOD
Supplied with standard and low-profile backplates
Connector: SATA 4x Multilane Infiniband (screw type)
Software compatibility: 32/64 bit support for Windows 2000/XP/Vista/Windows 7/Server 2003, 2008 , Linux, Supports 'Non booting' drivers up to Mac OS v.10.6
2 Year warranty