Wisetech ATA 100/133 Round IDE Cables
 

These days most everyone in the modding community runs round IDE
cables in their computers. What was once a time consuming and risky
process of rounding your own cables has now been replaced by
manufactured cables that are round right out of the box. Wisetech has
sent us some samples of their new ATA 100/133 round cables for us to
take a look at.

Direct Link: http://www.gideontech.com/content/articles/253/1

We use SATA now no more round cables.:)