LSI MegaRAID SATA+SAS controllers provide a new level of reliability, availability, and performance to businesses that are facing storage challenges driven by unprecedented data growth. The MegaRAID SAS 9280-4i4e, with four internal and four external ports, supports both internal drive storage and external JBOD expansion. Using the external SAS ports, multiple JBODs can be connected to a server, providing a scalable and affordable solution for growing storage requirements. External Connectors: 1 x SFF-8088 mini-SAS Internal Connectors: 1 x SFF-8087 mini-SAS Transfer Rate: Up to 6Gb/s RAID: RAID 0/1/5/6/10/50/60 Cache Memory: 512MB DDRII cache (800MHz) Features: Auto-resume on rebuild Auto-resume on reconstruction Online Capacity Expansion (OCE) Online RAID Level Migration (RLM) Package Contents: MegaRAID SAS 9280-4i4e QIG LP bracket Driver & Documentation CD Parts: 3 years limited