Spdif Headphones SPDIF Output How To Use?

SPDIF output how to use? - spdif headphones

I have on my laptop with two 3.5-mm connectors for headphones. under the right is a logo of SPDIF

Can someone help me how to use THT?
Is it you better sound quality
However, I make my headphones on SPDIF, use,

I have a 5.1-channel surround sound system with three 3.5-mm-exist, and I want to connect my cable card. Good time of 1 to 3.5 mm cable to the sound and headphone port.same in order to invite others from my laptop.

someone help me
I want to use SPDIF and is the best?

I have an HP dv6110ca
Dual-Core 64-bit
2048 MB
256MB graphics card