The LSI Logic SAS3442E-R four-port internal/four-port external SAS PCI Express storage adapter provides 300 MB/s bandwidth (600 MB/s, full duplex) on each port for combined throughput of up to 2.4 GB/s. The storage adapter supports multi-volume OS independent Integrated RAID 0, 1, 1E and 10E without the need for special drivers. The SAS3442E-R features PCI Express connectivity, removing the host bus bottleneck from the parallel PCI busses.