Rosewill SATA III to USB 3.0 and eSATA with UASP 4 Bay HDD Enclosure for 2.5 to 3.5 Inches HDD with Full Aluminum and Removable Fan (RX305 4B) Internal Interface: SATA III External Interface: USB3.0 & eSATA Support all 2.5" & 3.5" SATAI/II/III HDDs up to date Complies with SATA I & II & III specification up to 6Gbps HDD capacity supports up to 20TB(5TB4) Adopt UASP to enhance maximum performance of SSD Port-Multiplier(normal) mode- showing 4 HDDs respectively USB 3.0 operates at Super(5Gbps) or High (480Mbps) or Full (12Mbps) speeds