Sound Blaster Live Spdif Cable Connecting SPDIF Cable From Soundcard To Hard Drive?

Connecting SPDIF cable from soundcard to hard drive? - sound blaster live spdif cable

I just got a Sound Blaster Live! X-players from my team. I followed the instrucitons and some of them is a cable between the SPDIF output to connect hard drive Sound Blaster connection. The fact is that my CD is no exit for the cable entry

Do I need this, connected my sound card work?