The SATA power splitter cable PYO4SATA (1 to 4) features a SATA connector that connects to a SATA power supply of the computer and splits into four SATA sockets. With the SATA power splitter/Y cable, you can increase the number of SATA drives that can be installed in your system due to the available power connections. Additionally, it saves you the cost of upgrading the power supply for additional SATA drives.