This Dual IDE SATA to USB adapter cable gives you the flexibility of connecting any type of IDE or SATA drive to your computer via USB. All SATA/eSATA, 3.5"/5.25" IDE, and 2.5" IDE drives such as IDE/SATA type optical drive for CD/DVD-R, CD-RW, DVD-RW, 2.5" laptop hard drives and 3.5" desktop hard drives are all supported and can be easily hot-swapped to your system.The included external power adapter will allow you to power your drives outside your system giving you the ability to quickly add or swap between drives without opening your case. The SATA/IDE-USB adapter is like 3 drive to USB adapters built into one!The whole cable length is 2.5 feet. Power supply and connection cables are all included in each standard package.