External Serial ATA (eSATA) provides the same performance and features for disk and tape drives outside the PC, that 3 Gb/s SATA provides for storage inside the PC all with 5X faster performance than USB 2.0 or 1394 connectivity. The Adaptec RAID 1225SA card is an eSATA, two-port, PCI Express x1 controller featuring Adaptec HostRAID - an integrated RAID technology that maximizes system performance and uptime. The Adaptec 1225SA supports up to two 3Gb/s Serial ATA drives, Native Command Queuing, and offers RAID levels 0, 1, and JBOD (individual drive). The Adaptec 48-bit logical block addressing (LBA) support enables use of disk drives exceeding 137 GB in capacity. The Adaptec 1225SA supports Windows Vista, XP, 2003, as well as Red Hat Linux, SUSE Linux, NetWare and SLES.