The StarTech.com 24-inch Dual Drive IDE Cable is designed to fit as a new or replacement hard drive or CD-ROM cable in almost any size of computer case. These IDE cables are rounded, providing your workstation with increased airflow capabilities, allowing your cooling system to work more efficiently, thereby increasing its reliability. Dual drive connectors allow a master and slave device to be connected. This cable supports hard disk drives, CD-ROMs, Tape Backups, Zip drives, DVD-ROM, or any ATA peripheral.