***** Best Quality Guranteed. *****SATA SPLITTER powers up to four Serial ATA HDD, SSD, optical drives, DVD burners, and PCI-E cards from a single connection to computer power supplies; Snug-fitting drive SATA power clicks into place on your power supply to provide a secure connection that prevents accidental disconnection *****UPGRADE COST SAVER SATA power splitter spares the expense of upgrading an existing power supply to connect new SATA drives; Cost-effective 2-Pack provides a spare power for new installations or repairs; Keep a spare in your IT toolkit or at the test bench *****DIY OR PRO INSTALLERS both appreciate the convenience of sharing a PSU connection when installing new internal components like a DVD burner; 18 inch harness has 4 SATA drive receptacles spaced at 4.5 inch intervals; Provides sufficient length for internal management to minimize airflow impact in most configurations *****HDD POWER CABLES have 4-SATA 15 pin female receptacles and 1-SATA 15 pin male