External Connector: 2 x eSATA (RC-230 supports enabling of 4 Ports) * Internal Connectors: 4 x SATA III (RC-230 supports enabling of 4 Ports) * Interface: 2 x PCI-Express * Transfer Rate: Up to 6Gb/s * RAID: RAID 0/1/0+1, HyperDuo * Hot plug and Hot Swap * Operating Systems Supported: Windows 8, 7, 2008 R2, Vista, XP (32 / 64 bit), and Linux 2.6.x and above