The SBT-SRD4 SATA 1.5Gbps 4-Port Low Profile PCI RAID Controller from Sabrent is an excellent way to add RAID support to your computer or to your external array. This RAID controller fits into a low-profile or standard-sized PCI slot on your Windows computer and offers two internal SATA 1.5Gbps ports as well as two external 1.5Gbps ports. With this port setup, you can either configure the hard drive or drives in your computer in a RAID array or you can configure the hard drives in a connected external enclosure in a RAID array. This card gives you the best of both worlds. This card supports RAID 0, RAID 1, RAID 0+1 (mirrored-stripping), and RAID 1+S (mirrored-sparing) configurations.
4 High Speed Serial ATA interface ports, 1.5 Gb/s Hot-plug capability