【External hard Drive Reader】: support 2.5/3.5 SATA HDD and SSD, 2.5 /3.5 IDE HDD, SATA DVD-ROM, CD-RW, DVD-RW, DVD+RW Optical Drive, dual-head IDE connector Plus one SATA II connector. 【Widely Compatibility】: This USB 3.0 to IDE and SATA adapter allow to operate 3 HDDs simultaneously, It is compatible with 2. 5"/3. 5" Ide/SATA hard drives and 5. 25" Sata CD/DVD drives. 【High speed transfer】: data transfer up to 5Gbps.Backward compatible with USB 2.0/1.1.