Support 2.5 " / 3.5 " SATA HDD and SSD; 2.5 " / 3.5 " IDE HDD; DVD-ROM, CD-ROM, CD-RW, DVD-RW, DVD + RW Optical Drive. Dual-Head IDE Connector (40pin and 44pin) plus one SATA II Connector.; Allow to operate three HDDs Simultaneously. Data transfer rates up to 5 Gbps, backward compatible with USB 2.0 / 1.1.