Avid DigiLink to DigiLink Cable (100 Foot)DigiLink cables are designed to connect an HD I O peripheral (such as 192 I O or 96 I O) to an HD PCI card, or an HD I O to another HD I O, as two HD I Os can be chained together (this makes for a single, clean DigiLink connection between multiple I Os and the CPU). One 12' DigiLink cable is included with an HD core purchase (for connection of the I O to the CPU), and one 1. 5' cable is included with each HD I O (for chaining multiple I O units