The ADSA3R5-E features 1 eSATA and 3 internal SATA ports, allowing the versatility of both the latest External SATA and the industry standard SATA slots. This controller provides your system with RAID5 and JBOD configurations, giving you superior performance using the standard PCI slot. This RAID5/JBOD controller supports configurations of RAID 1, RAID 0, RAID 1+0, RAID5 and JBOD. JBOD combines individual drives into one large volume to show as one drive letter. External SATA (eSATA) connector also provides more secured cable connection, improved durability, increased EMI protection and up to 2 meters cable length. minimize