6Gb/s per port, 4 internal ports: Connects to both SAS and SATA drives. RAID Level: RAID 0, RAID 1, RAID 10, RAID 1E. Fusion-MPT architecture featuring over 290,000 I/Os per second. Supports four internal and four 6Gb/s SATA+SAS ports Supports up to 256 SATA or SAS end devices