16 ports support up to 16 SATA and SAS drives PCIe host interface 3 Gb/s per port0 RAID levels 0, 1,1E, 5, 5EE, 6, 10, 50, 60, JBOD Copyback Hot Spare and optional Snapshot Backup LED header for drive activity and failure indication SES2 and SGPIO enclosure management 256MB DDR2 fixed data cache RoHS compliant Optional battery backup module