4 -channel PCI- Serial ATA II RAID Controller. PCI 32bit@33/66 MHZ, 4 SATA II OR SATA I HARD DRIVE, SUPPORT RAID 0,1,5,10 & JBOD, Backward compatible to rocket Raid 1640 RAID arrays . remote array mgt thriugh (WEB, GUI, RAID & CLI). Support windows (XP, 2000, Server 2003), Linux and FreeBSD. RoHS Compliant