Belkin Ultra ATA Hard Drive and Floppy Round Cables dramatically enhance airflow within the CPU over flat-ribbon-style cables. They offer ideal support for high-end heat-generating applications such as gaming full-motion video and multimedia by reducing your PC's internal temperature averting potential damage to your system's performance and life span. These Cables glow under a black light so that you can create a fun customized look inside your PC. Built of the highest-quality materials Belkin Round Cables are easy to bend and install and they feature quick-pull tags that make them simple to identify. The Ultra ATA Hard Drive Round Cable features 40 data wires plus 40 ground wires to provide the highest performance possible for your CD-R/RW and 66/100/133 drives and other ATA devices.