Very good
The cable works very well. As it's digital, there's no risk of poor signal quality: if the sound gets through, it's perfect.
I connected my computer to the hi-fi system. There was a bit of a scare at first, as there was no sound and the system indicated that it was incompatible. In the end, the problem was quite simple: the computer was sending a 5.1 signal whereas the system can only receive stereo; all I had to do was go to the sound settings on the computer to switch to stereo, and everything started working!