SATA male to female Power Splitter Adapter Cable
Add three extra SATA power outlets to your Power Supply
Power up to 4 SATA drives from a single Serial ATA power supply connection.
There are two basic wiring systems in the computer: 1. the power wires; 2. the data wires. These power wires simply provide power to the hard drives. That is all they do. SATA data cables, on the other hand, transfer the data signal and this is what your operating system "sees". Whether your drives show up as individual drives (separate drive letters) depends on how you configure your system. The default in a Windows system is separate drives each with their own drive letter