High Point RocketRAID 2314 4-Channel PCI-Express x4 SATA 3Gb/s RAID Controller Compatible with SATA enclosures; Native command queuing (NCQ) for improved random performance; Online capacity expansion (oce) and online RAID level Migration (orlm); Staggered Drive spin up; Bios booting (Int13) to RAID Array; Direct connect up to 4 hard disks,PM (Port Multiplier) Ready up to 20 Hard Drives PCI-Express x4 4 eSATA Ports RAID level 0,1,5,10,JBOD Support Windows, Linux, FreeBSD and Mac OS X Full Height