The Intel RAID Controller RS2MB044, part of Intel"s portfolio of 6Gb/s SAS adapters offers unprecedented performance with exceptional data protection and design flexibility. With four internal and four external ports, the Intel RAID Controller RS2MB044 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. 3-Year Limited Warranty