The Adaptec Serial ATA II RAID 1420SA card is a four-port controller featuring Adaptec Host RAID - an integrated RAID technology that maximizes system performance and uptime. The Adaptec 1420SA supports up to four 3Gb/s Serial ATA drives, Native Command Queuing, and offers RAID levels 0, 1, 10, 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 1420SA supports Windows 2000, Windows Server 2003, Windows XP, RedHat Linux, SuSE Linux, and NetWare.