【External hard Drive Reader】: Support 2.5 "/3.5" SATA HDD and SSD; 2.5 "/3.5" IDE HDD; Dual-Head IDE Connector Plus one SATA II Connector. 【Widely Compatibility】:Allow to operate three HDDs Simultaneously. Data transfer rates up to 5 Gbps, backward compatible with USB 2.0/1.1. 【High speed transfer】:Data transfer up to 5Gbps.Backward compatible with USB 2.0/1.1